Fun, in the case of the RDX, starts with its turbo, which is a great source of extra power from the inline four-cylinder engine. First, there’s no noticeable lag, as the turbo spreads its power starting at around 2,000 rpm and through to almost 7,000 rpm. Whether mashing the gas from a stop light or accelerating on the Interstate, the RDX offers up a substantial well of torque and horsepower. Keep this in mind, however: using the transmission’s “D” mode stands for Dull, as the gear points seem designed to compromise pickup, perhaps for the benefit of better fuel efficiency. Slide it into “S,” and use the paddle shifters – or don’t – and you’ll get sportier response thanks to higher revs.