BMW i8 Future Colors
Recently, a few reports have surfaced suggesting that BMW engineers were once considering dropping a V10 gas engine in the BMW i8. Clearly, this made no sense then and even less now.
The reports further speculate that a V8 and then a V6 was considered for the i8.
As the reports say, BMW eventually ditched these oversized gas engines in favor of the three-cylinder unit that powers the production i8.
Problems is, those reports are wrong.
The i8 has always been BMW's Efficient Dynamics concept. Efficiency doesn't come from large gas-burning engines.
What BMW had actually been considering was a turbodiesel engine. In fact, the first i8 (Vision EfficientDynamics) concept, which debuted back in 2009, was indeed powered by a turbocharged diesel engine.
This diesel engine was later dropped in favor of a slightly more potent (and we assume cheaper) three-cylinder, 1.5-liter turbocharged gasoline engine.
The gasser made its first appearance in 2011 when the BMW i8 Concept hit the stage in Frankfurt.
An i8 with a V6, V8 or V10 engine makes absolutely no sense, neither does the reason reports gives for BMW ditching these engines: cooling issues?
No, BMW would've found a way to adequately cool the engine if it had actually been considering using any of them.
Truth is, the i8 was to be a turbodiesel, but costs and lacks of US acceptance of diesels likely convinced BMW to switch it over to that tiny 1.5-liter three-cylinder.
Source: World Car Fans