I am going to try and keep this short. I got a small cheap car almost 4 years ago as a second run around , it was an ex demo and was 4 months old. In Dec the car was 4, I have serviced every year despite doing 6000 miles a year. End of November I booked to main dealer a service and mot. The car had done 24000 miles never had a problem - ever. Car is serviced all green no issues. Last week the oil light came on, my Dh was driving and had nowhere to pull over so found a place to stop, called recovery and the oil filter was loose and no oil. The car was taken back to the garage and despite 4 days of calling etc refused to speak to us, finally called back to say they have parts blah blah £3k to fix!!!! My reaction was hang on car serviced last month oil filter loose lost oil it’s their fault as haven’t put the filter on properly. They Said they did a “full” investigation and found no fault with car or a leak anywhere but said it can’t be filter as no oil on bottom of engine so not their fault. So they found no fault with engine no leaks anywhere but admit filter was loose, which if tightened correctly would have no way of come loose - they say they are not at fault!!! They have offered, as good will to help by getting a second hand engineer but I think they didn’t fit the filter correctly and they are liable?