If you bought a junk car, say under £1500, then a sensible judge might rule "what did you expect?" But if you spent even as little a £2000 plus then you are entitled to a reasonably reliable vehicle that lasts longer than six weeks and you can invoke Sale of Goods and subsequent statutory and case law that assumes any serious fault that occurs within six months of purchase must have been present or developing on the date of purchase and you are entitled to your money back. Nothing that could have been present or developing on date of sale or could have been a result of 'wear and tear' would be covered by the warranty anyway. See: www.honestjohn.co.uk/faq/consumer-rights/