What a Full Car Service Should Include
There is no single universal definition of a "full service" — different garages and manufacturers define the scope slightly differently. However, the industry standard for a full (or "intermediate annual") service includes the following:
Engine Oil and Oil Filter
The oil is fully drained and replaced with fresh oil of the correct specification for your engine. The oil filter is replaced at the same time. This is the most critical element of any service — old, degraded oil causes wear, sludge build-up, and can ultimately destroy an engine.
Air Filter
The engine air filter is inspected and replaced if dirty or at the mileage interval specified by the manufacturer. A blocked air filter reduces performance and increases fuel consumption.
Cabin (Pollen) Filter
The cabin filter cleans the air entering the passenger compartment. It should be replaced annually or every 12,000–15,000 miles. A clogged cabin filter reduces the effectiveness of heating, ventilation, and air conditioning.
Spark Plugs (Petrol Engines)
Spark plugs are inspected and replaced if worn or at the manufacturer's interval (typically every 30,000–60,000 miles, or as low as 10,000 on older vehicles). Worn plugs cause poor starting, misfires, and increased fuel consumption.
Brake Fluid Test
Brake fluid absorbs moisture over time, which lowers its boiling point. The fluid is tested with a moisture-content tester. If contaminated (typically above 3% water content), it should be replaced — usually every 2 years regardless of mileage.
Fluid Level Checks and Top-Ups
Coolant, power steering fluid, screen wash, and clutch fluid (where applicable) are all checked and topped up to the correct levels.
Brake Inspection
Brake pad and disc thickness is measured on all four corners. The handbrake operation is checked. Any brake fluid leaks are noted.
Tyre Inspection
Tread depth is measured on all four tyres. Tyre condition (sidewall, inflation) is checked and pressures are adjusted if needed.
Battery Test
A load test assesses the battery's state of health and whether it can hold charge under demand. A failing battery (typically 4–6 years old) is flagged for replacement.
Visual Inspection
A visual check of steering components, suspension, exhaust, driveshafts (for CV boot cracks), lights, and bodywork for corrosion that could affect structural integrity.
What a Full Service Does NOT Include
- Timing belt replacement (this is a major service item, due every 40,000–100,000 miles)
- Coolant replacement (typically every 3–5 years)
- Gearbox oil (typically every 30,000–60,000 miles)
- Wheel alignment check (should be done if handling has changed)
How to Verify You Received What You Paid For
Ask the garage to return the old oil filter, air filter, and cabin filter so you can see they were replaced. Check the oil dipstick yourself — fresh oil is amber/golden, not black. Ask for a written report itemising what was inspected and what was replaced, with old vs new readings for brake pad thickness.