I had an 1981 Vw rabbit diesel that was a really good car, got over 35mpg with its 42hp it made. The xterra actually is faster that it was. Had a 1984 vw quantum which was the untimate pos I have ever had. Sounds like vw hasn't improved much since then by reading most of the postings.
We love the xterra as a whole, sits up high, runs good(slow but good) fit and finish are good.
Mileage is pathetic for only having 170hp. Full size trucks have more than 100hp more and get the same or better mileage these days.