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Green Car Journal has released the names of the five cars that made its short list for 2010 Green Car of the Year. The winner will be announced at the L.A. Auto Show in early December.

Without further ado, here are the nominees:

  • Audi A3 TDI (clean diesel)
  • Honda Insight (hybrid)
  • Mercury Milan Hybrid
  • Toyota Prius (hybrid)
  • Volkswagen Golf TDI (hybrid)

I’ve driven the Honda Insight and VW Jetta TDI (not the new-to-the-U.S. Golf), and reviewed them for Good Green Cars. The Mercury Milan Hybrid is a sister car to the Ford Fusion Hybrid, which I’m testing this week and will write up in a day or two.

What do you think, GoodGreenCars.com readers? Which one would get your vote? Or would you vote for a different car entirely? Leave your nominees in the comments.

Photo by Kristen Hall-Geisler.

Volkswagen L1 Concept

The Volkswagen L1 diesel hybrid concept created quite a stir at the 2009 Frankfurt Motor Show — which despite a slew of high-end exotics was more green than ever this year. Volkswagen says its one-liter concept car would be the most fuel-efficient car in the world. Actually, they say it is the most fuel-efficient car in the world, but I’ll withhold that title until the car leaves the “study” stage and reaches production.

The L1 is light, thanks to a carbon fiber body; compact like a VW Fox, and short, with a height similar to the low-slung Lamborghini Murcielago, according to Volkswagen. The hybrid has an electric motor and a teeny diesel-powered engine, plus start-stop technology for further fuel savings.

The VW L1 Concept by the numbers:

  • 837 pounds
  • 12.5 feet long; 3.75 feet wide
  • 170 mpg combined

Remember when I said diesel prices were lower than gasoline for the first time in years? Remember when I wondered if that would change American diesel buying habits? Well, it has, apparently. Volkswagen and Mercedes-Benz are both reporting increases in sales of their clean-diesel vehicles.

If you’re in the market for a clean diesel car, here are the 50-state diesels available right now, with their starting MSRP:

Each of these is available from the manufacturer as of today, and are eligible of a federal tax credit of about $1000. Check FuelEconomy.gov for details.

Image of a BMW diesel at the 2009 Detroit Auto Show by Kristen Hall-Geisler.

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.

Australians John and Helen Taylor are on their way to a new record in fuel efficiency. The couple, who’ve been setting fuel economy records for a quarter-century, are touring the U.S. in a clean-diesel VW Jetta TDI. As of September 10, the Taylors had covered over 2,700 miles and averaged 58.78 mpg. The current record for lowest fuel consumption on a nationwide drive is 51.58 mpg, so the Taylors are in good shape so far.

They began their latest record-breaking attempt to drive across the lower 48 in Chantilly, Virginia, and will end it September 26 in Beckley, West Virginia, after looping through Vermont, Montana, California, Louisiana, and points in between. The Taylors are using fuel-saving tacticts of the sort they teach in their fuel economy workshops, like avoiding idling and high speeds, plus all the GoodGreenCars.com faves like checking tire pressure and planning your route.

Check out Fuel Academy, the Taylors’ web site, for posts from the road and more information about their efforts to reduce oil consumption and CO2 emissions. They hold 46 speed driving world records and 36 fuel economy world records, so it sounds like they know how to have fun while reducing their impact on the planet.

We Americans have it pretty good — freedom of speech, religion, and the press; pursuit of happiness; pulled-pork sandwiches — but not when it comes to green cars. Here’s a rundown of the latest models we want, but can’t have:

  • Diesel-powered Ford Ka This little number will get 56 mpg from it’s 1.3-liter engine, and put out 75 horsepower. At the Ford presentation I recently attended, someone asked speaker and powertrain expert Dan Kapp about Euro-spec clean-diesel Fords coming to the U.S., and he said not in the foreseeable future.
  • Ford Fiesta ECOnetic Another small, diesel-powered Ford. This one, which goes on sale in the U.K. in November, gets 65 mpg and would be priced similarly to the Toyota Prius, if it ever made it to these shores. Which it won’t. Ever, according to Business Week.
  • Honda Fit Hybrid So Ford says it won’t bring its diesels to the U.S. because we’re all about hybrids, so why has Honda decided not to go forward with its Fit Hybrid? Competition with itself. It wants all the hybrid love to go to its new Insight, due next spring. So no one gets the Fit Hybrid until the next redesign, a Honda spokesman told Edmunds.com.
  • VW BlueMotion Diesel Golf The latest TDI-powered Volkswagen to come down the pike is a quick little four-door hatchback that gets 52 mpg, according to a VW press release, while still achieving 103 hp and a top speed of 117 mph. Luckily, VW did deem the U.S. worthy of the new Jetta SportWagon TDI, which gets 40 mpg on the highway and emits a mere 6.4 tons of CO2 annually.

Jerry O\'Connell at the Teen Choice AwardsTonight, stars I am too old to have heard of will be escorted to the red carpet at the Teen Choice 2008 awards in a fleet of Volkswagen’s brand-new 2009 Jetta TDIs, which run on clean diesel. Like everone else in Hollywood, the Teen Choice awards are going green, so Fox, which is airing the show, partnered with VW to showcase its new entrant into the eco-car market.

The ceremonies began their green initiative last year, and will continue to use recyclable materials in the sets and press credentials printed on recycled paper. The Jetta TDI, for its part, uses high-performance, low-sulfur diesel fuel and meets the strictest fuel emissions in the country — including California’s.

At least 15 stars will be arriving at the awards show in the Vee-Dubs, including James Marsden (Cyclops in the X-Men films), American Idol runner-up Katherine McPhee, and Jerry O’Connell, who was in Stand by Me and is now married to Rebecca Romijn. I would have to Google the rest of the list to find their pop-culture accomplishments, but they include Chase Crawford, Leighton Meester, Ed Westwick, Drake Bell, Brittany Snow, JoJo, Rachel Bilson and Sophia Bush.