Mazdaspeed never built many production cars, but they could've had more if all these had gone into production.

The Mazda Furai was a futuristic concept with motorsport ambitions, before it met its untimely demise during a Top Gear road ...

Electrification may be coming down the line eventually, but these cars with high-revving engines show that internal combustion isn't going anywhere yet.

LiquidPiston’s flagship innovation, the X-Engine, builds on the principles of rotary engines but with a transformative twist.

WinGD has already secured nearly 30 orders for X-DF-A engines in the bulk carrier, containership, tanker and LPG/ammonia ...

Now Pratt & Whitney thinks it may have taken the first steps along that path with the Hydrogen Steam-Injected, Intercooled ...

For a fuller exploration of the CR-X 2, you can check out the original project feature by legendary editor emeritus Don Sherman or read Elana Scherr's recent drive of the car when it was restored and ...

The sporty Diamond DA20 is fun to fly, has low operating costs, great cockpit visibility, perfect for flying schools, and an ...

The i8's greatest weaknesses are its underpowered engine and weak gearbox, so this DIY builder set out to fix it.

“The range extender allows you to go anywhere, and now this allows you to be connected anywhere,” Scout Motors CEO Scott ...

The 131bhp 1.5-litre BlueHDi engine is perky when it comes to performance, and it’ll cover the 0-62mph sprint in 10.6 seconds. Noise levels remain well subdued thanks to extra sound proofing ...

The first tech to be showcased was a rotary engine, as Mazda had released their first rotary-powered car just a couple of years prior. The Mercdes-Benz test mule in question was called the C 111 ...