How Often Should You Service Your Car? The Complete Guide

Few questions confuse car owners more than servicing. How often does your car actually need a service? Every year? Every 10,000 miles? Or can you trust the dashboard light? The answer — as with most things in motoring — is: it depends. Here is the complete guide.

The short answer

For most cars in the UK, the rule of thumb is a service once a year or every 10,000–12,000 miles, whichever comes first. Many modern cars have variable service intervals and will tell you when they are due — but you should never let the dashboard be the only thing looking after your car.

Car being serviced in a garage

Interim vs full service: what is the difference?

An interim service (roughly every 6 months or 6,000 miles for high-mileage drivers) covers the essentials: oil and filter change, plus checks of brakes, tyres, lights and fluids. A full service (annually or every 12,000 miles) goes deeper: air filter, fuel filter, spark plugs where applicable, and a comprehensive inspection of suspension, exhaust and drivetrain.

Most drivers need an annual full service. If you cover big miles — sales reps, I'm looking at you — alternate interim and full services through the year.

A typical schedule looks like this: up to 12,000 miles a year, one full service annually. Between 12,000 and 20,000 miles, add an interim service at the six-month mark. Beyond 20,000 miles, consider interim services every 6,000 miles. And if your car sits unused for months — the classic second-car scenario — it still needs an annual service, because oil degrades with time as well as mileage. Low-mileage cars are not exempt: moisture builds up in exhausts and brakes seize from disuse.

What about the service indicator?

Modern cars monitor your driving and calculate when a service is due. These systems are clever but not infallible: lots of short trips, cold starts and stop-start town driving degrade oil faster than the computer sometimes admits. If in doubt, service early — oil is cheap, engines are not.

Does servicing really matter?

Enormously. Fresh oil is the lifeblood of your engine; neglected oil turns to sludge, starves components and kills turbos. Regular servicing also protects your warranty, preserves resale value — a full service history can add 10–15% to a used car's value — and catches small problems before they become big bills. A £200 service beats a £2,000 repair every time.

What does a service typically cost?

An interim service at an independent garage runs around £120–£180; a full service £200–£350 depending on the car. Main dealers charge more — often £300–£500 — but stamp the book with the prestige some buyers want. For cars out of warranty, a good independent specialist is usually the sweet spot.

The DIY question

Confident home mechanics can handle interim servicing — oil, filters, plugs — with basic tools. But modern cars increasingly need diagnostic equipment to reset service lights and check systems, and anything involving brakes, suspension or timing components is best left to professionals. Know your limits: a botched DIY job costs more than the garage would have.

What about electric cars?

EVs still need servicing, just less of it. There is no oil to change and no exhaust to rot, but brakes, suspension, tyres and coolant systems all need attention — and EVs are heavier, so they are harder on tyres and suspension. Most manufacturers recommend a check every 12 months or 12,000 miles, focusing on battery health reports, brake condition and software updates. Budget around £100–£150 a year at a specialist.

Do not forget the MOT

Servicing and MOTs are different things — a service keeps your car healthy, the MOT is the legal minimum to keep it on the road. Cars over three years old need an annual MOT, and a well-serviced car almost always sails through. Many garages offer a combined service-and-MOT deal that saves both money and a second trip.

Final thoughts: servicing is the cheapest insurance your car will ever have. Once a year or every 12,000 miles — whichever comes first — and never ignore that dashboard light for long. Your car, your wallet and your MOT tester will all thank you.

FAQ

How often should I service my car in the UK? Once a year or every 10,000–12,000 miles, whichever comes first. High-mileage drivers should add an interim service at six months.

What happens if I skip a car service? Oil degrades, wear accelerates, and small faults go unnoticed — risking major failures, voided warranties and lower resale value.

Is it cheaper to service at a main dealer or an independent garage? Independents are typically 30–40% cheaper than main dealers for out-of-warranty cars, with no legal requirement to use a dealer to protect your warranty.

Can I service my own car? Basic interim servicing is very doable at home, but you will need diagnostic tools for modern cars — and keep receipts to prove the work for resale value.

Does servicing affect my car's resale value? Yes — a full, documented service history can add 10–15% to what buyers will pay, and its absence puts many buyers off entirely.