BMW and Honda (even more so Honda) have the technical talent to handle any design challenge. If I recall correctly, GM relies, or has relied, on Mercruiser for the build and development of Corvette engines. I doubt that Yamaha, Suzuki and Kawasaki will be too disadvantaged.
Relative to the days when gas was cheap in the 1990's..............it was the exchange rate. At that time, the dollar was 30~40% higher in value relative to the European currencies.