The BMW 1 Series 135i convertible is a compact, premium two-door cabriolet rather than the more familiar hatchback. With a powerful 3.0-litre petrol engine and automatic gearbox, the BMW 1 SERIES (2007-13) 135I 2DR CONVERTIBLE 3.0 306 SE STEP AUTO6 offers open-air motoring in a small, easy-to-place package. It sits above compact cars for performance and style, while remaining less imposing than larger luxury convertibles. Mycarcheck.com recorded three look-ups, covering one distinct VIN, so its figures are a small snapshot, not a market-wide guide. Those checks show an average private-sale valuation of £3,200 and mileage of 109,000; average annual use was 6,000 miles. The recorded cars had around five previous keepers, suggesting careful history checks matter. Ideal for couples seeking weekend fun, it pairs brisk performance with a folding roof, but has limited rear-seat room and higher costs than ordinary hatchbacks. Its character distinguishes it from Audi A3 Cabriolet rivals.