 I bought my xterra new and use it for work and do a lot of driving . I have 210,990 miles and do all the required maint. Oil every 4-5000 miles. Trans fluid every 50k. Tune-up was done at 150k w/timing belt. Didn't need water pump but changed it anyway. Shocks (factory stock at 40k not that good ) but since then) kyb's no prob!The only prob is break dust on front rims, hard to keep clean. Breaks every 30k easy to do my self. Engine strong overall very strong .