374hp BMW i8 Roadster unveiled

Both cars also get 70 miles per-gallon equivalent according to BMW.

BMW has revealed its facelifted i8 Coupe at the LA Motor Show, as well as debuting a new model, the BMW i8 Roadster. For reference, an i8 Coupe starts at $144,395 today. The soft-top roof, made up of a large fabric panel and integrated header rails, is claimed to open in just 15 seconds at speeds of up to 50kph. Total power of the plug-in hybrid has increased to 369 horsepower, a 12-horsepower bump over the current system.

Performance is increased with 0 to 60 miles per hour taking just 4.4 seconds for the Roadster and 4.2 seconds in the revised Coupe. Top speed is limited to 250 km/h (155 mph).

After a multitude of spy photos and various teasers over the last few months, the BMW i8 Roadster 2018 has finally been unveiled at the Los Angeles motor show.

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Convertibles require more chassis strengthening than coupes, so the Roadster understandably is heavier - though we don't know by how much. The rear window, which doubles as a wind deflector, also is altered, allowing it to be closed or opened separately from the roof.

2019 BMW i8 Roadster, Updated i8 Coupe Debut in LA
The New BMW i8 Coupe And Roadster Now Have Longer Range And 374 HP

The BMW i8 Roadster features a fully electric fabric roof, which takes just 15 seconds to fold or open at speeds up to 30mph; when the roof is stowed, the car's rear window raises slightly to reduce air turbulence in the cabin, while the roof and its mechanism are created to allow for some storage space behind the front seats.

A new E-Copper finish has been added, as has a Donington Grey metallic for both the Coupe and the Roadster.

Inside, the 2019 BMW i8 gets the latest version of BMW's iDrive infotainment system with an 8.8-inch touchscreen. The electric motor driving the front wheels gets 12bhp more power (now 141bhp) while the 1.5-litre petrol triple driving the rear wheels is unchanged in power (at 228bhp) but is said to sound sportier than before.

The BMW i8 has been on sale now since 2014.

In electric-only mode both models can reach speeds of up to 65mph - 75mph when the eDrive boost mode is engaged - and to help on the eco front the engine is now fitted with a particulate filter to cut emissions. Its cell capacity is up from 20 Ah to 34 Ah, while the gross energy capacity has been increased from 7.1 kWh to 11.6 kWh.

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