Buying a used car - Basic checks

A few basic checks can reduce the chances of getting stuck with a lemon:

Look closely for dents and scrapes in the bodywork; also check panel fit. Any damage will be costly to put right, so haggle accordingly or walk away.
Are the tyres okay, with no uneven wear? If they're worn out altogether you'll need to budget for new tyres. If they've worn unevenly it could be poorly aligned tracking or something more serious - such as a twisted bodyshell because of poor accident repairs.
Do all the speedo digits line up properly? Are the old MoTs to hand and does the mileage recorded on these forms tie in with what's displayed? If you suspect the car has been clocked, contact your local Trading Standards office (www.tradingstandards.gov.uk) and tell them about it.
Get an HPI check (www.hpicheck.com) done, which will tell you whether the car is subject to any outstanding finance. It will also tell you if the registration is the original one and whether or not the car has ever been involved in a major accident.
Does the chassis number (usually at the base of the windscreen on the passenger side) tie up with the one on the registration document? Also check the engine number, which is usually on the top of the block, down the one side.
Are all the keys available with the car? There should be at least a spare and probably a master as well. Lose the only key and you may have to have everything reprogrammed - which can cost hundreds of pounds.