The sixth-generation Ford Mustang is already under development, but all we know up to this point is simple speculations. For a long time, we have talked about rumors that the 2015 Mustang->ke428 will come with a turbocharged four-cylinder engine for the first time since the 1986 Ford Mustang SVO.

At the 2013 Geneva Motor Show, Edmunds spoke with Ford insiders who let them know that a boosted four banger will be part of the lineup, but only for the European market.

According to the report, this four-cylinder gasoline engine will be offered as a low-emissions alternative to the V8 engine currently offered in the Mustang. The V-8 engine is highly-taxable in Europe, so the four-cylinder engine will help to boost sales.

The engine will be based on the current turbocharged 2.0-liter EcoBoost four-cylinder engine featured in the 2013 Ford Focus ST. For the Mustang, the displacement will be increased to 2.3 liters through extending the stroke, widening the bore or maybe both. The output will be increased to about 300 horsepower up from the current 250 horsepower. It is expected to keep the fuel consumption at the current 23 mpg in city driving and 32 mpg on the highway.

These are, of course, unconfirmed rumors but they do come from a very reliable source. We’ll keep an eye out for some confirmation from Ford.

.