Enjoy all the comfort and style of BMW's new grand tourer with the added ability to lower the roof.

The new BMW 8 Series isn't even on sale yet, but the Bavarian brand is hard at work developing the convertible version. In a new teaser, the company shows off a camouflaged test mule for the droptop during development in Las Vegas, Nevada, and Death Valley, California.

Taking the 8 Series Convertible into the desert lets BMW engineers perform a hot-weather torture test on their new machine. Temperatures in Death Valley can reach over 122 degrees Fahrenheit (50 degrees Celsius), and the technicians leave the car with the top down for hours in this extreme heat to make sure the cabin's sophisticated electronics can take the punishment. Taking the grand tourer on the area's dirt roads also provides a chance to make sure that the interior has the necessary sealing to keep out the fine dust particles.

Gallery: BMW 8 Series Convertible new spy photos

The 8 Series Convertible looks identical to its coupe counterpart, except for its folding fabric top. The roofline doesn't quite copy the hardtop's sleek shape, but it still maintains an attractive aesthetic. Inside, the two models are indistinguishable, too. 

Under the hood, expect the Convertible to share its powertrain with the 8 Series hardtop. In the United States, buyers would get a twin-turbo 4.4-liter V8 making 523 horsepower (390 kilowatts) and 553 pound-feet (750 Newton-meters). The only available drivetrain would combine an eight-speed automatic and all-wheel drive. Europeans would also have the option of a twin-turbo 3.0-liter inline-six with 315 hp (235 kilowatts) and 502 lb-ft (680 Nm) of torque.

BMW has already confirmed the 8 Series Convertible's arrival in 2019, in addition to the four-door Gran Coupe. It's possible we could see a debut of the production version before the end of the year, though. Both vehicles are getting M versions in late 2019, too.

Source: BMW


Gallery: BMW 8 Series Convertible teaser

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Through death valley in the prototype of the BMW 8 Series Convertible.

BMW continues model offensive in the luxury segment – Open-top four seater of the BMW 8 Series undergoes hot climate testing in the USA.


Munich. BMW continues its current luxury segment product offensive with the development of a further model variant of the new BMW 8 Series. With intensive function trials and test drives between Las Vegas and Death Valley in the USA, the critical phase in the series development for the new BMW 8 Series Convertible has now begun. The results of so-called hot climate testing in the Western United States provide important insights into the functional safety of mechanical and electronic components under extreme weather conditions. Temperatures of more than 50 degrees Celsius, extreme dust formation on the edge of the desert, stop-and-go traffic on the Las Vegas Strip, gravel tracks around Mount Whitney and long-distance journeys between the Pacific coast and the Rocky Mountains characterise the challenging test programme for the new BMW 8 Series Convertible on its way to series maturity.

Weather conditions for a convertible definitely do not exist in Death Valley. However, the heat and the extreme dryness of the national park in the Mojave Desert do create the ideal conditions for an acid test of a special kind. Inside a prototype of the BMW 8 Series Convertible that has previously stood for hours in the blazing sun, BMW engineers check the onboard electronics, the hi-fi system, sensors and cameras for the driver assistant systems, displays for the new BMW Operating System 7.0, connectivity functions, seat adjustment and, at the very end, the automatic climate control. The camouflaged prototype’s trip to the Hoover Dam poses an additional challenge to the vehicle’s electronics. The exceptionally strong electromagnetic waves from the hydropower plant turbines installed there are the ultimate yardstick for the insensitivity of the electronic systems to external sources of interference. 

Furthermore, on endless tracks leading across the steppe and through the legendary Death Valley, the dust-proofness of the multi-layer soft-top and the roof mechanism are put to the test. The hardships suffered by testers and vehicle alike create the foundation for a new form of open-air enjoyment in the luxury segment. The new BMW 8 Series Convertible combines stylish elegance, exclusiveness and individuality with cutting edge equipment features in the areas of driver assistance, operation and networking. Moreover, the car’s fascinating character is enhanced by high-quality drive and suspension technology with which the BMW 8 Series Coupe has already redefined sporty driving pleasure in the luxury segment.

Hot climate testing has a similar level of significance for the series development of the new BMW 8 Series Convertible as has the programme at the Winter Testing Centre in Arjeplog, Sweden, as well as intensive test drives on the BMW Group proving ground in Miramas in Southern France and on the Nürburgring. Only when thousands of kilometres have finally been completed can developers rest assured that with the open-top model of the BMW 8 Series they are putting on the road a true dream car designed for the luxury segment.