Inside, the front passengers nestled inside the G37 Convertible will find much to admire. The base seats are fine; sport seats have adjustable supports and cosset snugly. LeftLane News states simply, the "G37 Convertible fits like a custom glove." Car and Driver points out that "as in any coupe, the front seats are the place to be," and the front seats on the Infiniti G37 "are mounted slightly lower" than in the G35 sedan "and offer a greater range of motion," according to Edmunds. They go on to say "this is good news for taller drivers," as the Infiniti 2009 G37's setup affords greater headroom and allows for an even greater opportunity to find a comfortable driving position. Edmunds also comments that "the available sport seats, with their adjustable bolsters, are very comfortable and snugly hold you in place."
While the G37's front seats are cozy, the rear seats are nearly useless. Both the G37 Convertible and Coupe lack rear legroom, and there's scant headroom, particularly in the Convertible when its top is raised. Car and Driver says of the Coupe, "adults sardined in the back are faced with the option of tilting their heads sideways or slouching past the point of reasonable comfort." Edmunds adds that "as in many coupes, rear legroom is scant, and rear headroom is particularly compromised by the G37's severely raked back window." Rear passengers in the Convertible "have almost five inches less legroom than they would in the back of a BMW 3-series droptop, so they won't be happy," according to Automobile. Inexplicably, Kelley Blue Book notes "except for limited headroom, the rear seats" on the 2010 Infiniti G37 "are more accommodating than might be apparent."
The Coupe sets aside 7.4 cubic feet of trunk space, which actually is larger at 10.3 cubic feet with the roof raised-considerably less with the top lowered, though the backseats are better used as luggage space anyway. "You know that area resembling a rear seat? That's actually the trunk when you put the top down," Edmunds reports, noting the best and highest use of the small backseat space. Automobile snarks, "With the top down, you'd be hard-pressed to fit two Ziploc freezer baggies back there. That is, if you can get the trunk open in the first place - the heavy lid lacks any kind of handle and is difficult to open." Edmunds points out the storage differences with the top up and top down: "a two-golf-bag trunk, with the top up, becomes a 2-cubic-foot trunk (think Kleenex box) with the top down." Car and Driver goes scientific, wondering if "the Large Hadron Collider is hard at work looking for a particle small enough to fit into the trunk." At least "the rear seatbacks fold down to expand the trunk," according to Cars.com.
Two passengers will appreciate the tightly constructed cabins and the wealth of expensive-feeling trim, as well as the engaging noises filtering into the cabin from the V-6. Reviewers simply can't say enough about what Edmunds calls the "excellent build quality." Kelley Blue Book also attests that their "'most improved' vote goes to the passenger cabin," where features like "the visually soft aluminum alloy trim (inspired by Japanese washi paper, Infiniti says), as well as the optional African rosewood trim," help bring an upscale ambiance. Motor Trend reviewers conclude that the various interior upgrades "collectively raise the bars of luxury and sport."