BMW has revealed its facelifted i8 Coupe at the LA Motor Show, as well as debuting a new model, the BMW i8 Roadster.

BMW says it has improved its technology surrounding the drivetrain of the i8, which now has more power from its electric motor and a longer range.

Total output is up from 266kW to 275kW, with the i8’s three-cylinder petrol engine remaining at 170kW. However, BMW says the engine now sounds better.

The new BMW i8 makes a run to 100km/h in 4.4 seconds, though BMW admits the Roadster is two tenths slower. BMW says the extra weight in the Roadster hasn’t affected its ability to hit its top speed of 250km/h.

To keep the Roadster as dynamically close to the Coupe as possible, BMW has implemented body-specific strengthening elements and gullwing doors which have been built to be as light as possible.

In addition, BMW used carbon-fibre-reinforced plastic (CFRP) to build the windscreen frame.

All up, BMW says the Roadster is 60kg heavier than the Coupe.

It comes with new 20-inch light-alloy wheels which BMW says are all 1kg lighter than the wheels previously available.

BMW has also released two new paint finishes, E-Copper metallic and Donington Grey metallic.

MOTOR will report BMW i8 Coupe and Roadster Australian availability and pricing when it is confirmed by BMW Australia.