James, When I 1st started , I gave every car a full 12 months warranty,sadly got let down by them not paying for genuine claims , I prep my cars to a very high standard so there were not many claims anyway - the final straw was an engine on an MG F ( Yes we know they are an issue !!) , They made so many excuses so I kicked them out , .Long story short ,After some research and asking customers what they valued - A car with 12 Months warranty being £200/300 more- than a car with shorter warranty and less money - MAJORITY Said price , so about 10 years ago I stopped using anyone , gave 3 months/3000 mile warranty and in that time I don't think I've paid £1500- in total ! A massive saving and little issues I just pay and keep customers happy.
Dealers say what about when you sell out of area , No problem, If customer has an issue don't make excuses , make it easy for them ( Put yourself in their shoes !) I tell them to use their normal garage or even main dealer , get a quote let me know and I've the settled the customer or paid the dealer direct ! The secret is buy proper cars - sell proper cars and its less hassle and more cost effective , but nature of this job we all get caught out the odd times !
Here's a review from 12 months ago from a distant away who has an issue !