See also:

Valet hand-off
When you have to leave a key with a valet, give them the Intelligent Key itself and keep the mechanical key with you to protect your belongings. To prevent the glove box and the trunk from being open ...

Smooth Power, Rough Ride
Driving the IPL home after a long workweek was like slamming a shot of espresso. It's fast and exhilaratingly fun to drive … but so is the base G37 coupe. The IPL adds 18 hp, but I really couldn't ...

Ride & Handling
Midsize luxury cars run the gamut from comfortable to rigid; the M is closer to rigid, though not so much that it's punishing to drive. Despite my test car having the Sport package — which augment ...