Join Date: Jul 2011
Location: Southern New Hampshire
Once upon a time I managed over 500 miles on my 2009 Mazda3 i Touring with a 5-Speed, and that car didn't have anywhere near the fuel economy ratings of our new (on order) 2016 Mazda3 s GT 5-Door with a 6-Speed manual. While 621 miles may not be manageable given the way I drive and the hilly environment I drive in, getting to the 600 mile mark may be doable.
2006 Acura TL 6-Speed Manual
2016 Mazda3 s GT 5-Door 6-Speed Manual