I noticed being cramped in the Jettas, and same platform (Golf, GTI)
the Passat fits me and my 6'-4" kids, and usually gets 52 mpg. It was just down to a half tank last night at 491 miles
Took 9.6 gal to top it off. Unfortunately they only made these gems in 96 and 97, and they are getting tough to find. I looked at one last year that had 550,000 miles, still getting 50+ mpg on original engine and tranny. I had to put ball joints and bushings in mine to improve the tire wear (< $30 in parts) It should now be good for another 300k miles