Photos of the BMW i8 concept as a open-top Spyder variant leaked to the web.

Autoforum has revealed leaked photos of the BMW i8 concept as a open-top Spyder variant which is reported to debut at the Beijing Motor Show in April. With i8 prototypes out in full force testing in public recently, the spyder version comes as a surprise.

Differences spotted from the i8 concept which debuted in Frankfurt last year include solid panel doors with repositioned mirrors, black windshield pillars, rear roof area, rear seats deleted and obviously no roof. The vehicle appears to be the same everywhere else.

The i8 Spyder concept will most likely keep its powertrain the same as well. The plug-in hybrid features a turbocharged 1.5-liter three-cylinder petrol engine which works with an electric motor to give a combined output of 353 PS (260 kW / 349 hp) and 550 Nm (406 Nm) of torque.

The Frankfurt i8 Concept weighed 1480 kg (3262 lb) accelerating from 0-100 km/h in 4.6 seconds and a limited top speed of 250 km/h (155 mph). Electric only range is 35 km (20 miles) which contributes to an average fuel consumption of 2.7 L/100 km (104 mpg UK / 87 mpg US) while emitting 66 g/km.

Expect the i8 Spyder to weigh slightly more.