Electric cars are gaining popularity for their efficiency and eco-friendliness, but How Long Do Electric Cars Last Compared To Gas vehicles is a crucial question. COMPARE.EDU.VN provides a comprehensive comparison, highlighting the potential longevity of EVs and their gas counterparts. This detailed analysis explores battery life, maintenance needs, and overall durability, helping you make an informed decision about your next vehicle purchase, while also exploring the advantages of electric vehicles, EV ownership, and electric car lifespan.
1. EV vs. Gas Car Longevity: An Overview
woman leaning against her electric vehicle while it is charging
When considering the lifespan of a vehicle, many factors come into play, including maintenance, usage, and environmental conditions. Generally, electric vehicles (EVs) have the potential to outlast their internal combustion engine (ICE) counterparts in terms of mileage and years. Let’s delve into the specifics.
1.1. Expected Lifespan: EVs vs. Gas Cars
On average, a traditional gas vehicle is expected to last around 150,000 miles or approximately eight years with regular use. Electric cars, on the other hand, can often reach 200,000 miles or about 12 years. This difference stems from the fundamental engineering differences between the two types of vehicles.
1.2. Factors Contributing to EV Longevity
Several key factors contribute to the longer lifespan of electric cars:
- Fewer Moving Parts: Electric vehicles have significantly fewer moving parts compared to gas-powered cars. The complex internal combustion engine is replaced by a simpler electric motor and battery system.
- Reduced Maintenance: With fewer moving parts, EVs require less frequent maintenance. There are no oil changes, spark plug replacements, or exhaust system repairs needed.
- Regenerative Braking: Electric cars use regenerative braking, which helps recapture energy during deceleration, reducing wear on brake pads and extending their lifespan.
- Battery Management Systems (BMS): Advanced battery management systems monitor and optimize battery performance, preventing overcharging, overheating, and other issues that can degrade battery life.
1.3. The Role of Battery Health
The longevity of an electric car is heavily dependent on the health and performance of its battery pack. The battery is the most expensive component in an EV, and its degradation over time is a primary concern for potential buyers.
1.4. COMPARE.EDU.VN: Your Guide to Informed Decisions
At COMPARE.EDU.VN, we understand the importance of making informed decisions when purchasing a vehicle. Our detailed comparisons provide valuable insights into the longevity, maintenance, and overall cost of ownership for both electric and gas-powered cars.
2. Understanding the Lifespan of Internal Combustion Engine (ICE) Vehicles
Internal combustion engine (ICE) vehicles have been the standard for over a century. Their lifespan is influenced by numerous mechanical components and the wear and tear associated with them.
2.1. Key Components Affecting ICE Vehicle Lifespan
Several critical components determine how long a gas-powered vehicle will last:
- Engine: The engine is the heart of an ICE vehicle, and its lifespan depends on factors like oil changes, cooling system maintenance, and overall driving habits.
- Transmission: The transmission transfers power from the engine to the wheels. Regular maintenance, such as fluid changes, is crucial for its longevity.
- Exhaust System: The exhaust system removes combustion gases from the engine. Components like mufflers and catalytic converters can corrode and require replacement.
- Suspension: The suspension system provides a comfortable ride and helps maintain vehicle stability. Worn shocks, struts, and bushings can compromise handling and safety.
2.2. Routine Maintenance for ICE Vehicles
To maximize the lifespan of an ICE vehicle, regular maintenance is essential:
- Oil Changes: Regular oil changes keep the engine lubricated and prevent excessive wear.
- Fluid Checks: Checking and replenishing fluids like coolant, brake fluid, and transmission fluid are vital.
- Tune-Ups: Periodic tune-ups, including spark plug replacements and filter changes, ensure optimal engine performance.
- Brake Service: Inspecting and replacing brake pads, rotors, and calipers are necessary for safe stopping.
2.3. Common Issues Affecting ICE Vehicle Lifespan
Despite regular maintenance, ICE vehicles are prone to certain issues that can shorten their lifespan:
- Engine Problems: Overheating, oil leaks, and worn piston rings can lead to costly engine repairs or replacement.
- Transmission Failures: Slipping gears, rough shifting, and complete transmission failure can occur due to wear or lack of maintenance.
- Rust and Corrosion: Exposure to salt, moisture, and other environmental factors can cause rust and corrosion, weakening the vehicle’s structure.
2.4. Making Informed Choices with COMPARE.EDU.VN
COMPARE.EDU.VN helps you navigate the complexities of ICE vehicle maintenance and potential issues, providing you with the information needed to make a smart purchase decision.
3. Diving Deep into Electric Vehicle (EV) Lifespan
Electric vehicles offer a different set of challenges and advantages regarding lifespan compared to traditional gas cars. The primary concern is often the battery pack, but other factors also play a significant role.
3.1. The Heart of the EV: Battery Pack Longevity
The battery pack is the most critical component in an electric vehicle, influencing its range, performance, and overall lifespan. Modern EV batteries are designed to last a long time, but they do degrade over time.
3.2. Factors Affecting EV Battery Life
Several factors can impact the lifespan of an EV battery:
- Charging Habits: Frequent fast charging can accelerate battery degradation compared to Level 2 or Level 1 charging.
- Temperature Extremes: High and low temperatures can negatively affect battery performance and lifespan.
- Depth of Discharge: Regularly depleting the battery to very low levels can reduce its overall lifespan.
- Driving Habits: Aggressive driving, such as rapid acceleration and hard braking, can put extra strain on the battery.
3.3. Battery Degradation: What to Expect
Battery degradation is a natural process in which the battery’s capacity decreases over time, resulting in reduced range. Most EV manufacturers guarantee a certain percentage of battery capacity after a specific number of years or miles.
3.4. Extending EV Battery Life: Best Practices
To maximize the lifespan of your EV battery, consider the following tips:
- Minimize Fast Charging: Use fast charging sparingly, opting for Level 2 charging whenever possible.
- Avoid Temperature Extremes: Park in the shade during hot weather and in a garage during cold weather.
- Maintain a Moderate Charge Level: Keep the battery between 20% and 80% charge for optimal performance and longevity.
- Drive Conservatively: Avoid aggressive acceleration and hard braking to reduce strain on the battery.
3.5. Other Components Affecting EV Lifespan
While the battery pack is crucial, other components also contribute to the overall lifespan of an EV:
- Electric Motor: Electric motors are generally very reliable and require minimal maintenance.
- Power Electronics: Components like inverters and converters can fail over time, but they are typically less problematic than engine components in gas cars.
- Braking System: Regenerative braking reduces wear on brake pads and rotors, extending their lifespan.
- Suspension: The suspension system is similar to that in gas cars and requires similar maintenance.
3.6. COMPARE.EDU.VN: Your Partner in EV Research
COMPARE.EDU.VN provides comprehensive information on EV battery technology, degradation, and maintenance, empowering you to make an informed decision about your next vehicle.
4. Maintenance Comparison: Electric vs. Gas Cars
One of the most significant differences between electric and gas cars is the maintenance requirements. EVs generally require less maintenance, which can translate to lower ownership costs over the vehicle’s lifespan.
4.1. Routine Maintenance for Gas Cars
Gas cars require regular maintenance to keep them running smoothly. Here are some of the most common maintenance tasks:
- Oil Changes: Typically required every 3,000 to 7,500 miles, depending on the vehicle and oil type.
- Filter Replacements: Air filters and fuel filters need to be replaced periodically.
- Spark Plug Replacements: Spark plugs ignite the fuel-air mixture in the engine and need to be replaced every 30,000 to 100,000 miles.
- Fluid Checks: Coolant, brake fluid, power steering fluid, and transmission fluid levels need to be checked and replenished.
- Tune-Ups: Periodic tune-ups ensure optimal engine performance and fuel efficiency.
4.2. Routine Maintenance for Electric Cars
Electric cars require significantly less routine maintenance. Here are some of the maintenance tasks that are typically needed:
- Tire Rotations: Rotating tires helps ensure even wear and extends their lifespan.
- Brake Inspections: Although regenerative braking reduces wear on brake pads, they still need to be inspected periodically.
- Fluid Checks: Brake fluid and coolant levels need to be checked and replenished.
- Cabin Air Filter Replacements: The cabin air filter cleans the air entering the cabin and needs to be replaced periodically.
4.3. Cost Comparison: Maintenance Over Time
Over the lifespan of a vehicle, the maintenance costs for gas cars can be significantly higher than for electric cars. Oil changes, tune-ups, and other maintenance tasks add up over time. Electric cars have fewer moving parts and require less frequent maintenance, resulting in lower costs.
4.4. COMPARE.EDU.VN: Helping You Save on Maintenance Costs
COMPARE.EDU.VN provides detailed cost comparisons for electric and gas cars, including maintenance costs, helping you make an informed decision that fits your budget.
5. Environmental Factors and Vehicle Longevity
Environmental factors play a crucial role in the lifespan of both electric and gas cars. Extreme temperatures, humidity, and road conditions can all impact vehicle durability.
5.1. Impact of Temperature Extremes
- High Temperatures: Extreme heat can degrade battery performance in EVs and cause engine overheating in gas cars.
- Low Temperatures: Cold weather can reduce battery range in EVs and make it harder to start gas cars.
5.2. The Effects of Humidity and Salt
- Humidity: High humidity can accelerate rust and corrosion in both electric and gas cars.
- Salt: Salt used on roads during winter can cause corrosion and damage to undercarriage components.
5.3. Road Conditions and Vehicle Wear
- Rough Roads: Potholes and uneven road surfaces can damage suspension components and tires in both electric and gas cars.
- Gravel Roads: Gravel roads can chip paint and damage undercarriage components.
5.4. Mitigating Environmental Impact
To protect your vehicle from environmental damage, consider the following tips:
- Park in a Garage: Parking in a garage can protect your vehicle from extreme temperatures and moisture.
- Wash Regularly: Washing your vehicle regularly, especially during winter, can remove salt and other corrosive substances.
- Apply Rust Protection: Applying rust protection to the undercarriage can help prevent corrosion.
5.5. COMPARE.EDU.VN: Providing Insights on Environmental Resilience
COMPARE.EDU.VN offers insights into how different vehicles handle various environmental conditions, helping you choose a vehicle that is built to last.
6. Resale Value and Long-Term Cost of Ownership
The resale value of a vehicle is an important consideration for many buyers. Electric cars have traditionally had lower resale values than gas cars, but this is changing as EV technology improves and demand increases.
6.1. Factors Affecting Resale Value
Several factors can influence the resale value of a vehicle:
- Age and Mileage: Older vehicles with higher mileage typically have lower resale values.
- Condition: Vehicles in good condition with no major damage or mechanical issues fetch higher prices.
- Demand: Vehicles that are in high demand tend to have better resale values.
- Fuel Efficiency: Fuel-efficient vehicles are often more desirable and retain their value better.
6.2. Resale Value of Electric Cars vs. Gas Cars
In the past, electric cars often had lower resale values due to concerns about battery degradation and limited range. However, modern EVs with improved battery technology and longer ranges are holding their value better.
6.3. Long-Term Cost of Ownership
The long-term cost of ownership includes factors like purchase price, fuel costs, maintenance costs, insurance costs, and resale value. Electric cars often have lower long-term ownership costs due to lower fuel and maintenance expenses.
6.4. Government Incentives and Tax Credits
Government incentives and tax credits can significantly reduce the upfront cost of purchasing an electric car, making them more affordable than gas cars in some cases.
6.5. COMPARE.EDU.VN: Analyzing Long-Term Ownership Costs
COMPARE.EDU.VN provides detailed analyses of long-term ownership costs for electric and gas cars, helping you make a financially sound decision.
7. Technology Advancements and Future Longevity
Advancements in technology are continually improving the longevity and performance of both electric and gas cars. New battery technologies, engine designs, and materials are making vehicles more durable and reliable.
7.1. Battery Technology Advancements
- Solid-State Batteries: Solid-state batteries promise higher energy density, faster charging times, and improved safety compared to traditional lithium-ion batteries.
- Lithium-Sulfur Batteries: Lithium-sulfur batteries offer the potential for even higher energy density and lower costs than lithium-ion batteries.
- Improved Battery Management Systems (BMS): Advanced BMS technology optimizes battery performance and extends battery life.
7.2. Engine Design Improvements
- Turbocharging and Downsizing: Turbocharging allows for smaller, more efficient engines that deliver comparable power to larger engines.
- Variable Valve Timing: Variable valve timing optimizes engine performance and fuel efficiency across a wide range of driving conditions.
- Direct Injection: Direct injection delivers fuel directly into the combustion chamber, improving fuel efficiency and reducing emissions.
7.3. Materials Science and Durability
- High-Strength Steel: High-strength steel is used in vehicle frames and bodies to improve safety and reduce weight.
- Aluminum Alloys: Aluminum alloys are used in engine components and body panels to reduce weight and improve fuel efficiency.
- Carbon Fiber Composites: Carbon fiber composites are used in high-performance vehicles to reduce weight and improve strength.
7.4. COMPARE.EDU.VN: Staying Ahead of the Curve
COMPARE.EDU.VN keeps you informed about the latest technology advancements in the automotive industry, helping you choose a vehicle that is both cutting-edge and reliable.
8. Real-World Examples: High-Mileage EVs and Gas Cars
Examining real-world examples of high-mileage electric and gas cars can provide valuable insights into their long-term durability and reliability.
8.1. High-Mileage Electric Cars
- Tesla Model S: Many Tesla Model S owners have reported reaching 200,000 miles or more with minimal battery degradation.
- Nissan Leaf: Some Nissan Leaf owners have also achieved high mileage, although battery degradation can be more noticeable.
8.2. High-Mileage Gas Cars
- Toyota Camry: The Toyota Camry is known for its reliability and longevity, with many owners reaching 200,000 miles or more.
- Honda Accord: The Honda Accord is another popular choice for drivers seeking a long-lasting and dependable vehicle.
8.3. Factors Contributing to High Mileage
Several factors contribute to achieving high mileage in both electric and gas cars:
- Regular Maintenance: Following the manufacturer’s recommended maintenance schedule is crucial.
- Careful Driving: Avoiding aggressive driving and treating the vehicle with care can extend its lifespan.
- Proper Storage: Storing the vehicle in a garage or covered area can protect it from environmental damage.
8.4. COMPARE.EDU.VN: Highlighting Real-World Performance
COMPARE.EDU.VN showcases real-world examples of high-mileage vehicles, providing valuable insights into their long-term performance and reliability.
9. The Role of Driving Habits and Maintenance Practices
Driving habits and maintenance practices play a significant role in the longevity of both electric and gas cars. Careful driving and regular maintenance can extend the lifespan of any vehicle.
9.1. Impact of Driving Habits
- Aggressive Driving: Rapid acceleration, hard braking, and high-speed driving can put extra strain on the engine, transmission, and battery.
- Frequent Short Trips: Frequent short trips can prevent the engine from reaching its optimal operating temperature, leading to increased wear.
- Towing and Hauling: Towing heavy loads can put extra strain on the engine, transmission, and suspension.
9.2. Best Maintenance Practices
- Follow the Maintenance Schedule: Adhering to the manufacturer’s recommended maintenance schedule is crucial.
- Use Quality Parts: Using high-quality parts can improve reliability and extend the lifespan of components.
- Address Issues Promptly: Addressing any issues or concerns promptly can prevent them from escalating into more serious problems.
9.3. COMPARE.EDU.VN: Providing Expert Advice
COMPARE.EDU.VN offers expert advice on driving habits and maintenance practices that can help extend the lifespan of your vehicle.
10. Making the Right Choice: Key Considerations
Choosing between an electric car and a gas car involves weighing several factors, including lifespan, maintenance costs, environmental impact, and personal preferences.
10.1. Evaluate Your Needs
- Driving Range: Consider your daily driving needs and choose a vehicle with sufficient range.
- Charging Infrastructure: Evaluate the availability of charging stations in your area.
- Budget: Determine your budget and compare the costs of electric and gas cars.
10.2. Consider the Environmental Impact
- Emissions: Electric cars produce zero tailpipe emissions, reducing air pollution.
- Sustainability: Electric cars are powered by electricity, which can be generated from renewable sources.
10.3. Think About Long-Term Costs
- Fuel Costs: Electric cars have lower fuel costs due to cheaper electricity.
- Maintenance Costs: Electric cars have lower maintenance costs due to fewer moving parts.
- Resale Value: Electric cars are holding their value better as technology improves.
10.4. Test Drive Both Types of Vehicles
- Experience the Differences: Test driving both electric and gas cars can help you understand the differences in performance and handling.
- Get a Feel for the Technology: Familiarize yourself with the technology and features of each type of vehicle.
10.5. COMPARE.EDU.VN: Your Trusted Resource
COMPARE.EDU.VN is your trusted resource for comparing electric and gas cars, providing the information you need to make an informed decision. With detailed comparisons, expert advice, and real-world examples, COMPARE.EDU.VN helps you choose the vehicle that is right for you.
11. Innovations in Electric Vehicle Technology
The electric vehicle industry is rapidly evolving, with continuous innovations aimed at improving performance, range, and lifespan. These advancements are making EVs an increasingly attractive option for consumers.
11.1. Advanced Battery Chemistries
- Lithium Iron Phosphate (LFP) Batteries: LFP batteries are known for their stability, safety, and long lifespan. They are becoming increasingly popular in EVs.
- Nickel-Manganese-Cobalt (NMC) Batteries: NMC batteries offer high energy density and good performance, making them suitable for a wide range of EVs.
- Solid-State Batteries: As mentioned earlier, solid-state batteries promise significant improvements in energy density, safety, and charging times.
11.2. Wireless Charging Technology
- Inductive Charging: Wireless charging uses inductive coils to transfer energy from a charging pad to the vehicle’s battery.
- Resonant Charging: Resonant charging allows for greater distances between the charging pad and the vehicle.
11.3. Vehicle-to-Grid (V2G) Technology
- Bidirectional Charging: V2G technology allows EVs to not only draw power from the grid but also send power back to the grid.
- Energy Storage: V2G technology can help stabilize the grid and reduce reliance on fossil fuel power plants.
11.4. Autonomous Driving Features
- Advanced Driver Assistance Systems (ADAS): ADAS features like adaptive cruise control, lane keeping assist, and automatic emergency braking enhance safety and convenience.
- Self-Driving Technology: Fully autonomous vehicles are still under development, but they promise to revolutionize transportation.
11.5. COMPARE.EDU.VN: Keeping You Informed
COMPARE.EDU.VN provides up-to-date information on the latest innovations in electric vehicle technology, helping you stay informed about the future of transportation.
12. Electric Vehicle Myths Debunked
There are many myths and misconceptions surrounding electric vehicles. Let’s debunk some of the most common ones:
12.1. Myth: Electric Cars Have Limited Range
- Reality: Modern electric cars have ranges that rival gas cars. Many EVs can travel 200 miles or more on a single charge.
12.2. Myth: Electric Cars Take Too Long to Charge
- Reality: Charging times vary depending on the charging method. Level 2 charging can fully charge an EV overnight, while DC fast charging can provide a significant charge in a matter of minutes.
12.3. Myth: Electric Car Batteries Need to Be Replaced Frequently
- Reality: EV batteries are designed to last a long time. Most manufacturers offer warranties of 8 years or 100,000 miles on their batteries.
12.4. Myth: Electric Cars Are Expensive to Maintain
- Reality: Electric cars typically have lower maintenance costs than gas cars due to fewer moving parts.
12.5. Myth: Electric Cars Are Not Environmentally Friendly
- Reality: Electric cars produce zero tailpipe emissions and can be powered by renewable energy sources, making them a more environmentally friendly option than gas cars.
12.6. COMPARE.EDU.VN: Setting the Record Straight
COMPARE.EDU.VN debunks common myths about electric vehicles, providing accurate information to help you make an informed decision.
13. Tips for Extending the Life of Your Vehicle
Whether you choose an electric car or a gas car, there are several steps you can take to extend its lifespan:
13.1. Follow the Maintenance Schedule
- Adhere to Recommendations: Following the manufacturer’s recommended maintenance schedule is crucial for keeping your vehicle in good condition.
13.2. Drive Carefully
- Avoid Aggressive Driving: Smooth acceleration, gentle braking, and moderate speeds can reduce wear on the engine, transmission, and brakes.
13.3. Keep Your Vehicle Clean
- Wash Regularly: Washing your vehicle regularly can remove dirt, salt, and other contaminants that can damage the paint and undercarriage.
13.4. Protect Your Vehicle from the Elements
- Park in a Garage: Parking in a garage can protect your vehicle from extreme temperatures, sunlight, and moisture.
13.5. Address Issues Promptly
- Don’t Delay Repairs: Addressing any mechanical issues or concerns promptly can prevent them from escalating into more serious problems.
13.6. COMPARE.EDU.VN: Your Partner in Vehicle Care
COMPARE.EDU.VN offers valuable tips and advice on how to care for your vehicle and extend its lifespan, ensuring that you get the most out of your investment.
14. The Future of Electric Vehicles and Sustainability
Electric vehicles are playing an increasingly important role in the transition to a more sustainable transportation system. As technology improves and adoption increases, EVs are poised to transform the way we travel.
14.1. Government Support for Electric Vehicles
- Incentives and Tax Credits: Governments around the world are offering incentives and tax credits to encourage the adoption of electric vehicles.
- Infrastructure Investment: Governments are also investing in charging infrastructure to support the growing number of EVs on the road.
14.2. Corporate Sustainability Initiatives
- Fleet Electrification: Many companies are electrifying their fleets to reduce emissions and improve their environmental footprint.
- Sustainability Goals: Companies are setting ambitious sustainability goals and investing in renewable energy sources to power their operations.
14.3. Consumer Awareness and Demand
- Growing Interest in EVs: Consumers are becoming increasingly aware of the benefits of electric vehicles, including lower operating costs and reduced emissions.
- Shifting Preferences: As technology improves and prices come down, more and more consumers are considering EVs as their next vehicle.
14.4. COMPARE.EDU.VN: Driving the Sustainable Future
COMPARE.EDU.VN is committed to promoting sustainable transportation by providing accurate information and resources on electric vehicles. We believe that EVs are a key part of the solution to reducing emissions and creating a cleaner, healthier planet.
15. Conclusion: Making an Informed Decision
Choosing between an electric car and a gas car is a personal decision that depends on your individual needs, preferences, and circumstances. By carefully considering the factors discussed in this article, you can make an informed decision that is right for you.
15.1. Key Takeaways
- Lifespan: Electric cars have the potential to last longer than gas cars due to fewer moving parts and reduced maintenance requirements.
- Maintenance: Electric cars typically have lower maintenance costs than gas cars.
- Environmental Impact: Electric cars produce zero tailpipe emissions and can be powered by renewable energy sources.
- Cost of Ownership: Electric cars may have lower long-term ownership costs due to lower fuel and maintenance expenses.
15.2. Your Next Steps
- Research Different Models: Explore the different electric and gas car models available and compare their features, performance, and prices.
- Test Drive Both Types of Vehicles: Test driving both electric and gas cars can help you understand the differences in performance and handling.
- Consult with Experts: Talk to automotive experts and EV owners to get their insights and recommendations.
15.3. COMPARE.EDU.VN: Your Go-To Resource
COMPARE.EDU.VN is your go-to resource for all things automotive. Whether you are considering an electric car or a gas car, we provide the information and tools you need to make a smart and informed decision. Visit our website at COMPARE.EDU.VN to explore detailed comparisons, expert reviews, and valuable resources.
Are you ready to make a change? Visit COMPARE.EDU.VN today and start your journey towards a more informed and sustainable vehicle purchase. Contact us at 333 Comparison Plaza, Choice City, CA 90210, United States or reach out via Whatsapp at +1 (626) 555-9090. Let compare.edu.vn help you drive into the future with confidence.
FAQ: Electric Cars vs. Gas Cars
Q1: Do electric cars last longer than gas cars?
Electric cars often last longer due to fewer moving parts and reduced maintenance needs.
Q2: What is the average lifespan of an electric car battery?
Most EV batteries are designed to last 100,000 to 200,000 miles, or about 8 to 10 years.
Q3: Are electric cars more expensive to maintain than gas cars?
No, electric cars generally have lower maintenance costs due to fewer moving parts.
Q4: How does temperature affect the lifespan of an electric car battery?
Extreme temperatures can reduce battery performance and lifespan.
Q5: What are the main maintenance tasks for electric cars?
Common tasks include tire rotations, brake inspections, and fluid checks.
Q6: Do electric cars have better resale value than gas cars?
Resale values are improving, but factors like battery health impact the value.
Q7: How does regenerative braking extend the life of an electric car?
Regenerative braking reduces wear on brake pads.
Q8: What is the role of the Battery Management System (BMS) in an EV?
The BMS optimizes battery performance and prevents damage.
Q9: Are there government incentives for buying electric cars?
Yes, many governments offer incentives like tax credits to encourage EV adoption.
Q10: How can I extend the life of my electric car?
Minimize fast charging, avoid extreme temperatures, and follow maintenance schedules.