Just got the new auto issue of Consumer Reports. It contains data collected from thousands of drivers in order to compare different vehicles' reliability. This reliabilty data is NOT based on the opinion of reviewers but instead is real-world data collected from drivers.

Not enough data yet on the 05-06 Xterra yet but the 00-04 models are either average to slightly above average reliability.

The new Frontier rates as having average reliability.

The Titan and Armada are a disappointment. Both had reliability far below average. Maybe after a couple more years on the market, Nissan can work out the bugs on these newer vehicles.