The engine’s compact size and shape allows the FR-S’ powertrain to be mounted lower and further back towards the rear, giving the car a lower center of gravity and a dynamically favorable front-to-rear weight ratio.

The FR-S’ naturally-aspirated engine is innovative, being the first boxer to incorporate Toyota’s D4-S injection system (earlier post), which utilizes both direct and port injection, resulting in increased horsepower and torque throughout the entire powerband, without sacrificing fuel economy.

The flat-four can mate with either a six-speed manual or a six-speed automatic transmission. The manual offers quick and precise shifts with a short-throw, while the automatic transmission features aggressive, sporty shifts that are initiated by steering-wheel-mounted paddle shifters. Power is distributed effectively via a limited-slip differential.