"Full service" gets used loosely, so here's what it actually covers at ONEFIX: an engine oil and filter change, a check (and top-up or renewal where needed) of coolant, brake fluid, power steering fluid and washer fluid, a full safety inspection of brakes, tyres, steering, suspension and lights, and a written digital health check with photographs covering all of it.
What's the difference between a full service and an interim service?
A full service is the complete version — everything above, done in full. An interim service is a shorter check, usually an oil change plus a safety inspection, done roughly midway through the full-service interval to cover the parts that wear faster than the full-service clock. Neither replaces the other; see Service by Time or by Mileage: Which Wins? for how the two fit together across a year.
Does a full service include the oil filter, or just the oil?
Both. The filter is replaced every time the oil is changed — old oil through a worn filter is one of the more pointless half-measures in car maintenance, so it isn't something that gets skipped to save a job.
What fluids actually get checked, not just the oil?
Coolant, brake fluid, power steering fluid (where fitted) and washer fluid are all checked as standard, and topped up or renewed where the condition calls for it. Brake fluid in particular absorbs moisture over time and loses effectiveness well before it looks obviously dirty, which is part of why it's checked on a schedule rather than only when it looks low.
Does a full service include checking the brakes and tyres, or just the engine?
Yes — a full service is not just an engine job. Brake pad and disc condition, tyre tread and condition, steering and suspension components, and all lights are checked as part of the safety inspection that comes with it.
How do I know what was actually checked on my car?
Every service at ONEFIX — full or interim — is recorded as a written digital vehicle health check with photographs, so the brake pad thickness, tyre tread, or a fluid that needed topping up isn't just a line on an invoice; you can see it. If something needs attention beyond the service itself, that's quoted in writing, and nothing is carried out without your approval first.
Is a full service the same on every car?
The checklist above is the shape of it, but the specific parts — which filters, which fluids, which intervals — depend on the manufacturer's schedule for that particular vehicle, which is one more reason the health check is done against your actual car rather than a generic list.
Does a full service include the MOT?
No — they're separate things. ONEFIX tests Class 4 vehicles (cars and small vans) for MOT, but a full service doesn't automatically include or replace that test, and passing an MOT doesn't mean a service isn't due. If both are due around the same time, it's worth booking them together, but they're assessed and recorded separately.
Will I be charged for anything the health check finds that isn't part of the service itself?
Not without being asked first. ONEFIX quotes a price in writing before any work starts, so if the health check turns up something outside the standard service — a tyre near the legal limit, a leaking hose — that gets raised and quoted on its own, not added to the bill automatically.
What does a full service cost at ONEFIX?
This page is about what's included, not what it costs — see How Much Is a Full Service in Wrexham? and How Much Is an Interim Service in Wrexham? for current pricing.
Book a full service at ONEFIX and you'll get the written health check with photographs as standard.