I had the 2005, 68k miles, CrewCab, 4.0L, V6, 4x4, 6 spd man for one week, then the ignition module burned up, leaving me and my family stranded one evening while out to dinner. One week later and I had a working Frontier again. This is my 3rd Frontier, and despite this problem, I dont regret my purchase. It feels considerably bigger than the prior year models, but is only 4 inches wider. Comfort and noise levels are great for this 4.0L V6. Big increase in HP and Torque from prior year models is very noticeable. Fuel economy is approx 20mpg in town. Having a 6 spd manual, at interstate speeds, as long as your not trying to break the land speed record, the mpg is a little better than that. It has a spray-in bed liner (stock), and that cargo tracking system, which is great for securing down loads. 8 cup holders, not 6 (as advertised), 3 car-lighter power outlets, one of which is 'power-on' even when car is turned off. I live in the Chicagolan area, and for the snow, the 4wd works great, even at slow speeds while turning corners. Front passenger seat folds forward flat, having a firm flat surface, if you need to use it as a desk or table. 2 glove-boxes, one of which is not obvious. The Nissan Frontier is also made in the USA, so you dont have to feel that you must buy one of those big American trucks in order to 'buy american'.
My Nissan Frontier is an extended cab, four cylinder, five-speed light duty little truck that is cute and fun to drive, but even with no loads, struggles to pull hills. On freeways though, it will clip along at high end speed limits and doesn't appear to be buffeted by wind. The cab heats and cools quickly, is conveniently outfitted for cups, and there is even some built-in storage in the cab. It is great for quick trips to the home improvement center (which is why I purchased it), but tall folks beware - there isn't much head or legroom. At 36,000 miles, it has also developed a lot of squeaks that I was told are normal. Gas mileage is a bit les than might be expected, but it is not a guzzler. Other than the squeaks, I have not had one problem with it.
I'm very happy with the truck, it's an 06' with 60,000mi. crew cab. The steering wheel has some wear on it, but the rest of the truck is and was in great condition when I purchased it. The entire family loves it.