Car servicing
Full vs Major Service: What's Actually Different?
A major service is normally a full service plus items that fall due less often. The manufacturer schedule, not the label, determines what your car needs.
Published by the Serviced247 editorial teamLast reviewed 29 August 2026Evergreen - reviewed annually
The step from a full service to a major service is where quotes start to diverge sharply, because a major service is defined only by whatever the individual garage chooses to put in it. Understanding what is normally added - and what is normally still excluded - makes the price difference easy to interrogate.
Key takeaways
- There is no statutory or industry-wide definition of a major service.
- The usual difference is longer-interval items: spark plugs, brake fluid, additional filters.
- Some expensive scheduled jobs, notably cambelt replacement, are normally excluded even from a major service.
- If your car is on a manufacturer schedule, ask the garage to service to that schedule by name.
- Compare itemised lists, not tier names, when a major service costs substantially more.
What a major service typically adds
The additions are generally items with intervals longer than a year. Which of them apply to your car depends entirely on the manufacturer schedule for your engine.
- Spark plugs on petrol engines, where the schedule has them due
- Brake fluid replacement, commonly a time-based item
- Additional filters not covered at the full-service level
- Coolant condition checks or replacement on some schedules
- A more detailed inspection, sometimes including a road test
What is usually still excluded
- Cambelt or timing belt replacement, which is a substantial standalone job
- Automatic or DSG gearbox oil and filter services
- Diesel particulate filter cleaning or replacement
- Clutch, suspension or brake component replacement - these are repairs, not servicing
- Air conditioning re-gas, usually an optional extra
Always confirm exclusions in writing. An unexpectedly large bill is most often an excluded item quoted after the car is already in the workshop.
Why the manufacturer schedule wins
Tier names exist because they make servicing easy to sell. Manufacturer schedules exist because engineers determined when specific components need attention on that engine. Where the two conflict, follow the schedule, especially on a car under warranty, on a service plan or on finance.
A practical middle ground: ask your garage to price the manufacturer schedule for the mileage you are at, and treat their tier names purely as a guide to labour time.
Deciding between them
- Check whether any longer-interval items are actually due at your mileage or age
- If none are due, a major service may simply be a full service at a higher price
- If several are due, a bundled major service can be better value than adding items individually
- Ask for both quotes itemised so the difference is visible line by line