Essential EV Maintenance Guide: Key Components That Need Regular Servicing
While electric vehicles demand significantly less servicing compared to traditional combustion-powered cars, they are far from being entirely maintenance-free. Understanding which parts require regular attention is crucial for ensuring safety, performance, and longevity on the road.
Batteries and Electric Motors: The Heart of Your EV
The battery pack and electric motor serve as the core components of any electric vehicle. These elements should undergo a comprehensive annual check as part of routine servicing. A battery health assessment evaluates performance and detects early signs of degradation.
Battery degradation occurs when internal cells deteriorate, reducing the vehicle's range per charge. For those considering a second-hand EV, always request the latest battery health report to verify optimal working condition and charge retention. If the report indicates issues, it's advisable to seek alternative options.
Tyres: Handling Increased Weight and Instant Power
Electric vehicles typically carry more weight due to their battery packs and electric motors. This extra mass places additional strain on tyres, while the instant throttle response can accelerate rubber wear. Regular inspections are essential to ensure tyres remain in good condition with tread depths above 1.6mm—the legal minimum for MOT compliance.
We recommend replacing tyres when tread depths reach 3mm to maintain adequate grip and stopping power. Specialised EV-specific tyres are available, offering improved rolling resistance and enhanced efficiency.
Brakes: The Role of Regenerative Braking
Many electric vehicles incorporate regenerative braking systems, which convert kinetic energy back into battery power when decelerating. This technology reduces the frequency of brake disc and pad usage. However, these components still require periodic replacement as they age, potentially suffering from corrosion, scoring, or seized callipers.
Suspension: Supporting Extra Weight
The additional weight of an EV exerts considerable pressure on springs, shock absorbers, and suspension parts, leading to faster wear. These should be inspected during regular services. Similar to conventional cars, most EVs use standard suspension setups where mechanical parts may need replacement due to issues like leaking shock absorbers or worn suspension arms.
Oil and Coolant: Fluids Still Matter
Despite lacking a traditional engine, electric vehicles still rely on certain fluids. Some models use oil in transmissions, requiring periodic checks and changes—though this varies by manufacturer. Coolant is also critical, maintaining stable battery temperatures in both cold and warm conditions.
Unlike petrol or diesel vehicles, these fluids don't need frequent replacement but should be changed as the vehicle ages to preserve transmission and battery health. Always consult the service book for manufacturer-guided maintenance intervals.
Wiper Blades and Washer Fluid: Visibility Essentials
Wiper blades on EVs function identically to those on combustion vehicles and require regular replacement as rubber perishes over time. Worn blades can impair visibility, scratch windscreens, and lead to MOT failures. Similarly, screenwash must be topped up regularly, especially during winter when road grime increases usage.
By adhering to these maintenance practices, EV owners can ensure their vehicles remain in peak condition, combining the benefits of electric mobility with long-term reliability.
