How Often Should You Service Your Car?

Knowing how often to service your car is an important part of keeping it reliable, safe and easier to budget for. The correct interval is not exactly the same for every vehicle. It depends on the manufacturer’s schedule, the car’s age, how many miles you drive and the type of journeys you make.

As a general guide, many manufacturers recommend a service around every 12,000 miles or once a year, whichever comes first. However, your car’s handbook or service schedule should take priority over any general rule. Some vehicles have shorter or longer intervals, and some use a service indicator to calculate when maintenance is required.

How often does a car usually need servicing?

For many everyday cars, an annual service is a sensible minimum. If you cover around 12,000 miles in a year, the mileage limit may be reached first. If you drive fewer miles, the time limit still matters because engine oil, fluids, rubber components and other parts can deteriorate with age and use.

The usual principle is therefore:

• Service the car at the manufacturer’s recommended mileage interval.
• Do not exceed the recommended time interval, even if you drive very little.
• Follow whichever limit comes first when the schedule gives both time and mileage intervals.

Some cars have separate interim and full service intervals. An interim service is usually a more limited check carried out between larger services, while a full service involves a broader inspection and more scheduled maintenance. The exact work varies by vehicle, so it is worth checking what your manufacturer means by each service level.

For more detail, see our guide to the difference between an interim and full service.

Why the manufacturer’s schedule matters

The service schedule is based on the engine, transmission, fluids, filters and other components fitted to your particular car. It may specify when to replace engine oil, the oil filter, air filter, cabin filter, spark plugs or timing belt. These items do not all need changing at every visit, which is why following the correct schedule is more useful than relying on a fixed list of tasks.

You can normally find the recommended intervals in the vehicle handbook, service book or the manufacturer’s online service information. Some newer cars display a service reminder on the dashboard. That reminder is useful, but it should not replace the handbook, especially if the vehicle has a separate time-based requirement.

If you have recently bought a used car and cannot confirm when it was last serviced, a garage can check the available service records and assess what maintenance may be due. It is better to establish a clear starting point than to assume that a missing record means all scheduled work has been completed.

Does the way you drive affect service intervals?

Yes. The standard interval is usually based on typical driving, but certain types of use can place more demand on a vehicle. Examples include:

• Frequent short journeys where the engine does not fully warm up.
• Regular stop-start traffic and long periods of idling.
• Repeated towing or carrying heavy loads.
• High annual mileage, particularly on busy roads.
• Driving in dusty, muddy or otherwise demanding conditions.

Short journeys can be harder on a car than their low mileage suggests. The engine may spend much of its time warming up, while the battery, brakes and exhaust system also have less opportunity to operate under ideal conditions. If your driving is particularly demanding, the manufacturer may recommend more frequent checks or an interim service.

Drivers covering high mileage may also benefit from an interim service between full services, depending on the vehicle and its schedule. This is not a universal requirement, so the handbook remains the best reference.

What if you drive very little?

Low mileage does not usually mean that servicing can be skipped. Engine oil can absorb moisture and become less effective over time, while brake components, tyres, fluids and rubber parts can age whether the car is moving or not. A car that is mainly used for short trips may also need attention to its battery and braking system.

An annual service gives a technician an opportunity to check time-related items as well as mileage-related wear. It can also identify simple problems before they become more disruptive. For a closer look at low-mileage use, read whether a car still needs servicing when it is driven very little.

What is checked during a service?

The exact contents depend on the service level and the car, but a scheduled service may include checks or replacement of items such as:

• Engine oil and the oil filter.
• Fluid levels and visible leaks.
• Brakes, steering and suspension components.
• Tyre condition and pressures.
• Lights, wipers and washers.
• Battery condition and charging performance.
• Engine air and cabin filters where required.
• Warning lights and relevant electronic systems.

A service is not the same as an MOT. An MOT is a legal roadworthiness test for eligible vehicles, while a service is planned maintenance intended to keep the car working properly and to address wear. A car can pass an MOT and still be due a service, or need servicing soon after an MOT.

Likewise, a service does not guarantee that every possible fault will be found. If the car has a new noise, warning light, fluid leak, vibration or change in handling, mention it when arranging the appointment. These symptoms may need separate investigation rather than being treated as routine service items.

What happens if you miss a service?

Missing one service does not automatically mean the car has suffered serious damage, but delaying maintenance can increase the chance that wear or a developing fault goes unnoticed. It may also mean that scheduled items, such as filters, spark plugs or timing belt-related work, are not completed when required.

Over time, missed servicing can affect reliability and may make it harder to understand the vehicle’s maintenance history. If the car is leased, under warranty or being prepared for sale, check the relevant terms and keep invoices and service records together.

Our guide to what can happen if you skip a car service explains the possible consequences in more detail.

How to work out when your next service is due

1. Check the date and mileage of the last service.
2. Look in the handbook or service schedule for the next time and mileage limit.
3. Use the earlier of those two limits when calculating the due date.
4. Consider whether your short trips, high mileage or towing mean the car needs more frequent attention.
5. Check whether a timing belt, transmission fluid or another major scheduled item is due separately.

If the service history is incomplete, gather any invoices, dashboard reminders and previous garage records before arranging an inspection. An independent garage can explain what appears to be due and distinguish scheduled maintenance from additional repairs. If you are in or around Salisbury and want to discuss the manufacturer’s schedule for your car, you can find more information about vehicle servicing at Ashton’s Garage.

When should you stop driving and seek advice?

A routine service can usually be planned ahead, but some symptoms should not wait for the next service date. Stop in a safe place and seek professional advice if the car has a serious brake or steering problem, significant overheating, a damaged tyre, a major fluid leak, or a warning light accompanied by unusual noises or loss of performance. It is not possible to identify the cause reliably from a description alone, and continuing to drive may be unsafe.

For ordinary servicing, the simplest answer is to follow the manufacturer’s schedule and arrange maintenance at least annually unless the vehicle’s requirements say otherwise. Keeping the records up to date and mentioning any changes in the car’s behaviour will help a garage carry out the right checks at the right time.