Volvo knows how to make a good six-cylinder engine ...

We can trace this straight-six love affair back to 1936.

For decades, the gold standard brand for a straight-six-cylinder-powered sport sedan has been BMW. But the gold standard doesn't necessarily mean being the only general game in town worth considering.

The mighty inline-6 (also known as a straight-six or I6) was once a common sight, powering any number of models from around the world. In the last few decades, however, the V6 has more or less ...