Seating, cabin space, and ride comfort might be the weakest aspects of the whole 2010 G37 Sedan package. Even the standard seats in the 2010 G37 Sedan have good support, though some might find them a bit too narrow and snug. There's adequate legroom, though headroom is somewhat scarce. The backseat is hardly a place for adults to spend long periods of time—made worse by a shortage of legroom and oddly reclined seatbacks.
Kelley Blue Book calls the front seats "amazingly comfortable and supportive," with standard "eight-way power adjustment for the driver and four-way for the passenger, plus manually adjustable lumbar supports." Other reviews read by TheCarConnection.com enthusiastically agree, with ConsumerGuide noting that "the seats in Sport models have additional side bolstering to keep occupants planted in fast cornering." But in back the compliments don't hold. Kelley Blue Book reviewers warn that "rear passengers will find the G37 sedan's rear bench seat belted for three but contoured for two average-sized adults at best." Edmunds says that backseat passengers are "treated to a satisfactory amount of headroom and legroom for a sport sedan, though the cushion is rather low."
The backseats don't fold all the way forward to increase trunk space, as they do in many other sedans, but there is a pass-through for skis and such, and trunk space is decent. ConsumerGuide's criticism of "interior small-item storage space [as] just fair" will come as a bigger disappointment. The trunk isn't particularly large either, measuring just 13.5 cubic feet, but Edmunds reviewers claim it proves "surprisingly capacious," thanks to its intelligent layout.
ConsumerGuide claims that "assembly quality and most interior materials are on target for the class." Edmunds says that "materials are mostly of high quality, though the pebbled plastic on the center console feels downmarket, as does the flimsy overhead map-light housing." The interior of the G37 seems sporty and premium yet not lavish—it conveys the feel of a high-end sports-car cabin more than a sedan, and it's put together tightly. For 2010, trims and finishes have been revamped, and the instrument panel now includes white gauges and a new aluminum trim.
Everything is put together very well. Edmunds deems "fit and finish [is] generally good," while Cars.com notes the numerous "high-quality materials" inside.
Overall, refinement and quiet certainly aren't the reason for getting a G37. The ride isn't downright jarring, but it's quite firm, and road noise is more prominent inside than it is in most other sport sedans. Edmunds reports that they "found road noise to be an issue during highway cruising," and Motor Trend "noticed more noise than [they were] expecting" during their test drives. So does ConsumerGuide, observing that "road noise is evident on coarse surfaces, especially with the tires included on the G37 Sport."