EV Maintenance: What Changes and What Doesn't

The maintenance case for electric cars is real but frequently overstated. An EV genuinely removes a long list of routine items, because the entire combustion and exhaust apparatus simply is not there. What it does not do is remove maintenance altogether, and a few components actually work harder than they would in a petrol car.

What disappears

There is no engine oil, so no oil changes and no oil filter. No fuel filter, no air filter for combustion, no spark plugs, no timing belt or chain, no exhaust system, no catalytic converter, no radiator servicing in the conventional sense, and no clutch on a single-speed drivetrain.

Taken together that is most of what a routine petrol service consists of, and it is why EV servicing intervals are longer and the bills smaller. The saving is genuine and it compounds over the years you own the car.

What stays exactly the same

Tyres, brakes, suspension, steering, wipers, cabin filter, washer fluid, lights, the twelve-volt battery, and the air conditioning system all behave much as they do in any other car. These are also, collectively, most of what actually goes wrong with cars in daily use.

The twelve-volt battery is worth calling out because it surprises people. Almost every EV still has one, and it runs the computers, the lights and the contactors that connect the main traction battery. When it fails, the car will not start, and it fails on roughly the same three-to-five-year schedule as in any other vehicle. An EV owner is not exempt from a flat battery on a cold morning.

Tyres wear faster, and this is not a defect

Electric cars are heavy, because batteries are heavy, and they deliver maximum torque instantly from a standstill. Both of those load the tyres harder than an equivalent petrol car does. Expect meaningfully shorter tyre life, and budget for it.

Many EVs are also fitted with tyres specified for the car rather than merely for the size, often with reinforced sidewalls to carry the weight and a construction chosen to reduce rolling resistance and noise. Replacing them with the cheapest equivalent size undoes some of that, usually showing up as reduced range and more road noise. Rotating regularly and keeping pressures correct matters more here than on a light hatchback.

Brakes wear slower, which brings its own problem

Regenerative braking uses the motor to slow the car and recover energy, which means the friction brakes do far less work. Pads and discs on an EV routinely last two or three times as long as they would otherwise.

The complication is that brakes that are rarely used seize. Discs corrode, calipers stick, and slider pins dry out. It is entirely possible for an EV to need brake work not because the pads are worn but because the hardware has not moved enough. An occasional firm stop from moderate speed helps clean the discs, and an annual inspection that includes freeing off and greasing the caliper slides is worth insisting on.

The traction battery, and how to be kind to it

The main battery is not serviceable in the way other components are, but how you use it measurably affects how long it lasts. Two factors dominate: heat and time spent at extreme states of charge.

• For daily use, charging to around 80 percent and not routinely running below 20 percent reduces stress on the cells. Most cars let you set a charge limit; use it, and charge to 100 percent only before a long trip.
• DC fast charging is convenient and occasionally necessary, but it generates heat. Habitual fast charging when a slower AC charge would do accelerates degradation.
• Avoid leaving the car sitting at very high or very low charge for long periods, particularly in heat. Around half charge is the kindest place to leave a car parked for weeks.
• Park in shade where you can. Sustained high temperatures are the single biggest environmental factor in cell ageing, which matters in most of India.

Some capacity loss is normal and expected. Manufacturers warrant the battery against falling below a stated percentage, commonly around seventy percent, within a period usually measured at eight years. Gradual decline within that is degradation, not failure.

Coolant is still a thing

Most EVs use liquid cooling for the battery pack, the motor and the power electronics, because keeping cells within a temperature window is central to both performance and longevity. That is a real coolant circuit with a real service interval, and it is easy to overlook precisely because there is no engine to associate it with.

Check what your manufacturer specifies. It is typically a long interval, but long is not the same as never.

Charging equipment deserves attention

The cable and the home charge point are part of the car's maintenance picture even though they are not part of the car. Inspect the cable for damage and the connector pins for discolouration, which indicates heat and a poor connection. Keep the connector clean and dry.

If you have a wall box, it should have been installed on a dedicated circuit by a qualified electrician, and it is worth having the installation checked periodically. Charging draws high current for many hours at a time, which is a duty cycle domestic wiring is not always specified for.

Finding someone who can work on it

High-voltage systems require specific training and equipment, and this is not an area for improvisation. Anything involving the traction battery, the inverter or the orange cabling belongs with a trained technician.

The everyday items, though, are ordinary car work. Tyres, brakes, suspension, wipers and air conditioning can be handled by any competent workshop, which matters because it means EV ownership does not tie you exclusively to a dealer network for routine jobs.