The BMW 6 SERIES CONVERTIBLE (2015-18) 640I 2DR CONVERTIBLE 3.0 SS 320 EU6 SE AUTO8 is a large, premium four-seat convertible, sitting above everyday cabriolets as a stylish grand tourer. Its long, elegant shape and folding roof suit open-air cruising, while the 3.0-litre petrol engine and automatic gearbox promise effortless, refined performance rather than budget motoring. It’s best suited to couples or small households wanting a comfortable, special-occasion car for weekends, touring and sunny commutes, rather than maximum practicality. Against a Mercedes-Benz E-Class Cabriolet or Audi A5 Cabriolet, the 6 Series feels larger and more luxurious, with a relaxed ride and strong acceleration; running costs and rear-seat access are trade-offs. Mycarcheck.com has recorded nine checks across five VINs, so its figures are indicative, not a market survey. The cars averaged £27,600, 20,000 miles and 5,000 miles yearly, with 0.56 previous keepers on average—useful context when assessing a used example.