Hybrid Car Servicing: What Is Different and What Stays the Same

The short answer

A hybrid car is serviced much like a normal petrol car, because it still has a petrol engine that needs oil, filters, spark plugs and coolant. The difference is that a hybrid also has a high-voltage battery, an electric motor and power electronics, so a proper hybrid service adds checks on those parts and needs a mechanic who knows how to work safely around them.

In other words, you are not paying for a completely different kind of service. You are getting a normal service with some extra checks and some extra care taken along the way.

What stays the same

Most hybrids on UK roads, such as a Toyota Yaris, Corolla or C-HR, a Honda Jazz or a Kia Niro, have a petrol engine under the bonnet. That engine does not know it is part of a hybrid. It still needs its oil and oil filter changed, its air filter replaced, and its spark plugs swapped at the intervals the manufacturer sets.

The rest of the car is also ordinary. Tyres, suspension, steering, wipers, lights, the cabin filter and the 12-volt battery all get checked the same way they would on any other car. Yes, most hybrids still have a small 12-volt battery, and when it goes flat the car will not switch on, just like a normal car.

The extra checks a hybrid needs

The high-voltage system has its own set of checks. A good hybrid service looks at the condition of the orange high-voltage cables and their connectors, checks the separate coolant circuit that many hybrids use to keep the inverter cool, and reads the hybrid system for stored fault codes using diagnostic equipment.

Many hybrids also cool the main battery with air drawn from inside the cabin, often through a vent near the rear seats. That vent and any filter behind it can clog with dust and pet hair. If the battery cannot stay cool, it can lose performance over time, so keeping that airway clear is a small job that matters.

Why the engine oil and brakes behave differently

Because a hybrid switches its engine on and off all the time, the engine often runs for short bursts and may not always get fully warm, especially on short town journeys. That is one reason to stick to the oil grade and change intervals in your handbook rather than stretching them out.

Brakes are the other surprise. A hybrid slows itself down partly by using the electric motor as a generator, so the pads and discs often wear slowly. That sounds like good news, and mostly it is, but brakes that are barely used can rust and the caliper sliders can stick. A service should include cleaning and checking the brakes rather than just measuring the pad thickness and moving on.

Safety: why not every garage should touch the hybrid system

The main battery in a hybrid runs at a voltage that can seriously injure someone who does not know what they are doing. Routine jobs like an oil change are safe for any competent mechanic, but anything involving the orange cables, the inverter or the battery itself should only be done by someone trained in high-voltage safety, using insulated tools and the correct procedure to make the system safe first.

There is also a practical point. On many hybrids the engine can start by itself when the car is switched on, even while it is parked in the workshop. A mechanic who knows hybrids will put the car into the right maintenance mode before working under the bonnet.

Does a hybrid need servicing as often?

Service intervals for hybrids are set by the manufacturer and are usually similar to the petrol version of the same car, often every year or a set mileage, whichever comes first. Check your handbook or service book for your exact schedule, as it varies between makes and models.

Skipping services on a hybrid is a false economy. The petrol engine still wears, and small problems like a clogged battery cooling vent or a sticking brake caliper are far cheaper to deal with early. Keeping a full service history also helps when you come to sell the car, because buyers of used hybrids often ask to see it.

It is also worth knowing the signs that your hybrid needs attention between services: a hybrid system warning light, the engine running far more often than it used to, a noticeable drop in fuel economy, or a cooling fan running loudly from the back of the cabin. None of these should be ignored.

Getting your hybrid serviced in Walsall

At MF Autocentre in Walsall we service hybrid and electric cars as well as petrol and diesel. We follow the manufacturer schedule for your car, carry out the extra hybrid checks, and explain anything we find in plain English before any extra work is done.

If you are not sure when your hybrid is due or what your service should include, call us on 01922 636820 or book online and we will look up the schedule for your registration.