The 2005 Xterra was larger in all dimensions and much more civilized, while retaining the off-road capability for which the model is renowned. Improvements include a refined engine and responsive, secure handling -- thanks to the addition of electronic stability control (ESC) as standard equipment. Side- and curtain airbags are standard with this generation. The strong 4.0-liter V6 engine delivers quick acceleration, but overall mileage is just 17 mpg. The four-wheel drive system remains part-time only. Folding the 60/40-split rear seats expands the cargo area to 45.5 cubic feet. Payload capacity is 920 pounds and towing capacity is 5,000 pounds. The cargo floor has a rail system for securing objects and a storage space underneath. Bluetooth was introduced to most trim levels for 2015, after which the model was discontinued.