Published on 25 May 2026 by TRD Moters | Based at Unit 15, Lilleshall Grange, Newport TF10 9HL
Not all used cars are created equal. Some are genuine, well-maintained vehicles that will give you years of trouble-free motoring. Others are neglected examples that will drain your wallet. Here is how to tell the difference.
A full service history is the single best sign of a reliable car. Look for stamps in the service book that match the dates and mileages in the advert. Check that the servicing has been done at the correct intervals, typically every 12 months or 10,000 to 12,000 miles. A car with full main dealer history is the gold standard, but a well-documented independent garage history is almost as good. Patchy service history means you are taking a risk.
Use the government MOT history checker to compare mileage readings year on year. A reliable car will show consistent mileage increases of roughly 8,000 to 15,000 miles per year depending on the owner's usage. Any large gaps or mileage drops are red flags that suggest clocking or a period off the road. Also look at the advisory items: a car that has had the same advisory for worn suspension bushes for three years has clearly not been maintained properly.
How a car looks inside tells you how the owner treated it. A clean, tidy interior with intact trim, working switches, and no nasty smells suggests the owner cared about the car. A filthy interior with ripped seats, sticky surfaces, and a general feeling of neglect suggests the mechanical side has also been neglected. Check under the mats for dampness, which could indicate a water leak.
Start the engine from cold and listen. A healthy engine should fire up quickly and idle smoothly without misfiring. Rev the engine and listen for any hesitation or flat spots. The oil pressure light should go out immediately. Check that the temperature gauge reaches normal operating temperature within a few minutes and stays there without creeping into the red zone.
Test the gearbox thoroughly. A manual should feel slick and easy to operate. A notchy or stiff gear change could mean worn gearbox oil or internal wear. An automatic should change gear smoothly without any jerking or hesitation. If it hesitates when changing down, that is a warning sign. Also check the clutch bite point is not too high.
Stone chips on the bonnet are normal on an older car, but large areas of rust or filler are not. Run your hand along the sills and behind the wheel arches to feel for bubbling paint. Open and close the doors, boot, and bonnet. They should close with a solid sound and the gaps between panels should be even. Misaligned panels suggest accident damage that was not properly repaired.
At TRD Moters, we help keep reliable cars on the road by supplying quality used parts. Visit us at Unit 15, Lilleshall Grange, Newport TF10 9HL or call 07721 551617 to see what we have in stock.
TRD Moters, Unit 15, Lilleshall Grange, Newport TF10 9HL. Call 07721 551617 for a free valuation or parts enquiry.
Contact UsTRD Moters, Unit 15, Lilleshall Grange, Newport TF10 9HL. Call 07721 551617.