Unusually, three different layouts of the six-cylinder engine remain in favour: the straight-six, the V6 and the flat-six. When it’s bad though... it can be a gritty, painful-on-the-ear misery.

He named it the contra engine two for how the cylinders worked in contrast. The name didn't stick, but the engine did. The flat-twin ... while a straight six employs six vertical (or nearly ...

Under the hood lies a naturally aspirated 4.0-liter flat-six engine that delivers 411 hp and 310 lb-ft (420 Nm) of torque, screaming all the way up to 7,500 rpm. Sure, a factory-fresh Porsche GT3 ...

More than five million miles of development driving have taken place to create this new flat-six engine and its design was a clean-sheet process. There’s no belt drive or starter motor ...

which moved to flat-four turbos in 2017. Well, most of the lineup: last year saw the Cayman GT4 and Boxster Spyder bring back six-cylinder power. The new GTS 4.0 models share their engines with ...