Bit of a random one but I have seen a car on auto trader that is about £3000 cheaper than most others around the same age/spec (£21,000, most are around £24,000-£27,000) . 21 plate so still some warranty, 4000 miles on the clock, pristine condition, auto trader has listed it as ‘all checks passed’. It’s not from a big garage, I phoned a mobile number listed and they have 7 cars listed on auto trader (some of them cat S and N, though this car isn’t), it just all seems to good to be true. Is there anything I should be cautious of or checking or should I just accept I have found a good deal and go for it? The seller has said they source their cars from auction and have 37 good reviews on auto trader.