i8 Roadster First Edition detailed

The updated 2018 BMW i8 Coupe has been officially revealed this week, ahead of the 2018 Detroit motor show.

Largely mirroring the specification of the i8 Roadster, the Coupe gets a larger 11.6kWh battery (up from 7.1kWh), and a more powerful 105kW electric motor (up 9kW).

Zero-emissions driving range is rated at 55km, with top speed in electric mode claimed at 120km/h.

Meanwhile, the 1.5-litre three-cylinder turbo petrol engine is unchanged, developing 170kW of power and 320Nm of torque, for a combined power output of 275kW.

BMW claims the coupe can sprint from 0-100km/h in 4.4 seconds, on its way to a limited top speed of 250km/h.

Differing from the Roadster, obviously, is the hard top roof, along with the 'Coupe' badging on the C-pillars.

Updates over the outgoing model include revised front and rear treatments, new headlights, BMW's latest iDrive 6 infotainment system, along with new alloy wheel designs.

Also detailed this week is the i8 Roadster First Edition, which will be limited to a production run of 200 units.

The launch variant will be offered in all exterior and interior finishes available across the i8 Coupe and Roadster ranges, including the new E-Copper metallic and Donington Grey metallic shown on the vehicles pictured.

Other highlights include the 'Carpo' interior design package, comprising of full leather trim, and in the case of the i8 Roadster is exclusively available in Ivory White/Black.

Stay tuned to CarAdvice for more details on the 2018 BMW i8 at the Detroit motor show.