VW Concept A (R&T)

[JAFO]

Natural Gas engines produce a bit more torque than regular gas engines, plus it's a more green fuel. A lot of farm tractor manufacturers offered Natural Gas versions as a less expensive alternative to their diesel models.

Ok, but taking 8 hours to half way fill up your car is rediculas.
http://www.usatoday.com/money/autos/...atgascar_x.htm

Still they were comparing a 3.5L 215 HP gasoline engine to a 1.4L 148 HP natural gas. Therefore I thought the comparison to a 1.3L 135 HP Wankel Rotary NA Engine was a more equal comparison.

And if natural gas is so good why does the VW need both a super charger and and turbo to get a meesly 148 HP?

The Wankel isn't known for having very good economy and has always suffered from low torque, which is why it's pretty much never been seen in the 4X4 world.

Naturally aspirated Rotarys yes, supercharged no. My 12AT 1.2L makes 200HP with 200 Ft/lbs of torque. A little off from our VX's 215HP 230 Ft/lbs of torque, but close considering it is a small turbo running 8 psi boost.