Once upon a time, you could look at the back of a trunk lid of a BMW and come up with a pretty fair idea of what sat under its hood. For example, a 320i was a 3 Series with a fuel-injected, 2.0-liter engine, a 328i was a 3 Series with a fuel-injected, 2.8-liter engine and a 328Ci was a two-door 3 Series with the same engine. Those were good days.
When BMW switched its entry level 3 Series, the 328i, from a naturally aspirated, 3.0-liter six-cylinder to a turbocharged, 2.0-liter four-cylinder, we weren't entirely sure what to think. Sure, from a pure numbers perspective, the new 2.0-liter cooked the old 3.0's goose, delivering more torque at far more accessible engine speeds while boosting horsepower and fuel economy.