The BMW 8 Series Convertible (2018-22) 840i is a premium four-seat convertible: a grand tourer rather than a practical family car or city runabout. Its elegant shape and folding roof place it near the top of the UK luxury drop-top market, alongside the Mercedes-Benz E-Class Cabriolet. With a 3.0-litre petrol engine, 340 horsepower and automatic gearbox, the 840i delivers smooth journeys and relaxed open-air driving. It suits couples seeking a refined touring car, with occasional rear-seat use; running costs and limited space make it less suited to budget commuters or growing families. mycarcheck.com has recorded 429 checks across 143 different VINs, offering a useful snapshot of this sought-after model. The observed cars averaged £43,500 in private-sale value, 25,000 miles and about 5,000 miles annually, with roughly one previous keeper. Against sportier, tighter rivals, the BMW 8 Series Convertible 840i stands out for comfort, presence and effortless performance in its class.