Price for a good one: £4,500 Some of these are more than 20 years old, so it's arguably now a classic. What this two-door, four-seat drophead is, however, is very handsome and well-built, with a wonderfully smooth engine. It's an Eighties style icon but none the worse for it – and cheaper than an Audi Quattro. Getting long in the tooth now and many have suffered the indignities of aftermarket wheels and spoilers as well as eye-watering mileages. Drove well in its day, but was refined rather than fast, with taut-feeling controls, a ponderous gearchange, some scuttle shake and tail-happy handling. Trust your judgment. And avoid questionable bolt-on parts. If it feels tired, it probably is. Why you want one: wallet-friendly wind-in-the-hair, Eighties style icon, beautifully built and capable of long, trouble-free life. Why you don't: cracked cylinder heads when neglected, questionable custom interiors and paint, snap oversteer in the wet. You might not know: between 1986 and 1990 some 72,586 325i cabriolets were sold, making it the most popular cabriolet E30 derivative. It also gives today's buyer a big choice