The 2009 Nissan Frontier comes in four-door King Cab and Crew Cab versions. The former configuration includes front-hinged rear access doors and flip-up backseats, while the latter comes with conventional, rear-hinged doors and a full-sized bench seat. Reviewers mostly agree on the interior roominess and quality of the Nissan 2009 Frontier. With the extended bed options, the interior of the truck has grown, making it more of a mid-size pickup than a compact truck. The Crew Cab has more interior space than the King Cab, but even in the Crew Cab, the backseat is considered too small or uncomfortable for adults to ride in. The interior is called "spacious" by Edmunds, and ConsumerGuide says there is "good six-footer headroom and legroom" in the front seat.
Thoughts on the quality of the interior of the truck are mixed. ConsumerGuide explicitly believes that the interior "looks low-buck" due to hard plastic on most surfaces. On the other hand, Car and Driver states that "interior quality is above average for the segment, as many of the Frontier's interior pieces are shared with the Nissan Xterra sport-utility vehicle."
There is also quite a bit of storage space available, both in the bed and the cabin of the Nissan 2009 Frontier. The rear seats in the extended cabs can flip up, providing storage space on the inside, as well as security and protection for important items. The availability of options on bed length (with five- or six-foot choices available) allows the buyer to choose the proper bed depending on the space they need. The longest bed, though, is six feet long, which limits somewhat its workhorse utility.