E90 (2005–2011)

Modern BMW, modern problems, such as blocked DPF filters, which are increasingly common, so always be on guard for a blowing diesel turbo. The timing chain can fail if the servicing has been even slightly overlooked. Interestingly, the original 17in and 19in alloy wheels have been prone to cracking on run-flats, although they should have been replaced by now. Avoid the problems and get an automatic 2010 325i convertible with 60,000 miles for £10,500.