I'm very pleased with the 2010 VW Jetta TDI. I drive through the Kentucky hills to and from work plus around town. First two 13+ gal fillups of diesel averaged 41.6 and 41.8 mpg. Traded in an '04 Cadillac CTS, and can report that I am pleasantly surprised with the pickup, passing and hill climbing ability of the TDI with all that torque. The engine never acts like it is working hard at all. I can't wait for a long trip...