New & Used Infiniti Q40: In Depth
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Infiniti's Q40 is a small, rear-wheel-drive or all-wheel-drive sport sedan that is powered exclusively by a V-6 engine. It is basically a reincarnation of an older model that continues to be one of the most involving in its class. Really, only the name has changed.
Though the name sounds similar, the Q40 isn't a new version of Infiniti's dead-and-buried flagship Q45. Instead, it's basically a rebadged version of the former G37 sedan, wearing a different nameplate and given an extension of a year or two past its original departure date. It comes in below the price of the Q50, which is technically the G37's rightful replacement, offering the Infiniti badge at a slight discount.
Offering up the same formula as the G37 Sedan, however, isn't bad at all—provided you're not attached to the latest in-car technology. With a 328-horsepower, 3.7-liter V-6 and a quick-shifting seven-speed automatic transmission, the Q40 is fundamentally quick and responsive; meanwhile excellent steering and firm suspension tuning bring great driver control, with dynamics and poise that truly make it one of the best-handling sport sedans at any price.
Despite aging sheetmetal, the Q40 still holds up today. It helps that the design was slightly ahead of its time when it was introduced for 2007. The interior is a different story, however, looking very obviously a generation behind the rest of today's Infiniti lineup. The dated look is most obvious when you compare the Q40 to the newer Q50 sedan, the model that was supposed to replace the old G37.
The Q40 fits the bill as a driver's car, but some of its strengths on that count can also be weaknesses when it comes to comfort and refinement. Its small size is great on the road, but it results in a cramped cabin, especially in the rear seat. The taut suspension makes for superb handling but falls down when it comes to ride comfort—the 40 can be stiff, even harsh on broken pavement, and road noise creeps in more than it does in many comparable sport sedans.
Standard features on the 2015 Infiniti Q40 include leather upholstery, eight-way power heated front seats, Shodo aluminum trim, electroluminescent gauges, the Intelligent Key system, a Bluetooth hands-free calling interface, and 17-inch alloy wheels. Major options on the Q40 include a Bose Studio on Wheels sound system, a rearview camera, and a hard-drive-based navigation system with voice recognition.
The Q40 may be bench-sitting for 2015, with a new, smaller model waiting in the wings. Or the Q40 badge might be fleeting. We'll update this page as soon as Infiniti gives us a better idea of why this model exists.