Small-car, clean-diesel enthusiasts will be glad to hear that the 2010 Volkswagen Golf TDI will be sold in the U.S. next year. Why should you be glad? Well, for starters, it was name the “World Car of the Year.” Here are the deets, if you’re in the market for a fuel-efficient car while you wait for the Nissan Leaf to be available in your town:

• Two doors for $17,490; four doors for $19,190
• 2.0-liter TDI clean diesel engine
• 140 hp, 236 lb-ft of torque
• 30 mpg city, 41 mpg highway
• 0-60 mph in 8.6 seconds
• CFC-free air conditioning standard

In the wake of crazy high gas prices last summer and the collapse of the U.S. auto industry over the past nine months or so, all three Detroit car makers shelved plans for new diesel engines slated for pickup trucks. Mercedes-Benz and Volkswagen forged ahead with their clean diesel plans, but sales haven’t been as peppy as they had hoped.

Now, with cheaper diesel and tougher CAFE standards in the future, will U.S. car buyers flock to clean diesels? Or will the stinky stigma remain while we save our pennies for the Tesla S electric sedan or the Chevy Volt, which GM has promised not to abondon despite bankruptcy?

I’ve driven a couple of the clean diesels on sale in the U.S. and had pleasant experiences. You can revisit the Mercedes Blue-Tec and VW Jetta TDI posts for the scoop.

Well, anyone can visit the site to learn about Volkswagen’s TDI clean-diesel engines, but it’s aimed at U.S. car buyers, who are still a bit leery of the technology.

The first hurdle in America is cost. In Europe, gasoline carries a heavy tax, making diesel vehicles the cheaper choice in the long run, despite higher initial cost. VW wants to convince us here in the U.S. of the value of fewer fill-ups and great gas mileage — like the nearly 40 mpg I got in the Jetta TDI Sportwagen.

Second is the lingering perception that diesel is stinky and gross. Thanks to strict emissions standards in the U.S. — and stricter standards on the way — diesel is no longer the sooty, smelly mess of a fuel that it used to be. Clean diesel pretty much lives up to its name, and VW rival Mercedes has a tail-pipe treatment in the BlueTec system that cleans the emissions further.

Don’t forget the benefits of biodiesel, especially when it can be made from post-consumer oils. VW has long been on the biodiesel wagon, even allowing customers to use it without violating the warranties on their new diesels.

I was at a meeting with Stefan Jacoby, CEO of VW North America, last week. He said VW is leaning heavily on its clean-diesel and improved gasoline technologies to improve fuel efficiency by as much as 50% in the next few years rather than investing heavily in hybrids and EVs. We’ll find out in the next decade how that strategy plays out for VW, versus the likes of GM’s Chevy Volt extended-range EV or Mitsubishi’s i MiEV.

Image by Kristen Hall-Geisler.

I’ve blogged about the race before, so this is just a recap. Race teams running alternative fuels for the 2008 season include:

• GT1 Class — Corvette Racing, E85
• G2 Class — Aston Martin V8 Vantage, E85
• LMP1 Class — Intersport Racing’s Lola, E85
• P1 Class — Audi R10, clean diesel

Photo by Dave Hamster.