1980 Volkswagen Bus/vanagon on 2040-cars

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VW Jetta TDI dyno shows HP loss trying to recreate cheat mode

Volkswagen is working on a fix for diesel-engined vehicles that are out of compliance with emissions regulations in the US and other countries. We're told that engineers will be presenting a solution internally sometime this month, but that doesn't mean we'll actually see it in the wild this month. One big question we have about the coming fix is, will it affect the car's performance? That question relates to another we have about the engine as it is: How much performance would the 2.0-liter diesel lose right now if it were turned down to pass US emissions? The Fast Lane Car tried to sketch some answers by going to a shop in Denver, Colorado to run a 2011 Jetta TDI with a six-speed DSG transmission on an all-wheel-drive dyno. The thinking was that if you ran all four wheels the car would think it was on the road, whereas if you ran only two the car might think it's being tested. We'll get straight to the numbers: the stock sedan is quoted at 140 horsepower and 236 pound-feet of torque. When run with all four wheels turning it produced an uncorrected 114 hp and 214 lb-ft at the wheels. When run with just two wheels in motion the Jetta got 113 hp and 188 lb-ft at the wheels. Reading the graph, we're told that power differences between the two runs were as much as 15 hp and 32 lb-ft. You'll need to take some salt with these numbers, though, because the dyno and test protocol in the video are nothing like those used by the EPA. The shop attempts to trick the Jetta into 'emissions testing mode' by using the front wheels only for the two-wheel-drive run, but we have a feeling the software code at issue is far more sophisticated than that, since the ICCT, UVA, the EPA, and CARB investigated the situation for more than a year and couldn't figure out. Also, the technician adjusts for being a mile above sea level with a correction factor of 1.2 applied to horsepower and torque, which inflates the disparity in the final power differences over the two runs. Go to YouTube and read the lengthy comments on the video left by Andrew Price for a more thorough dissection of what could explain TFL's disparities. You can watch the video above, and feel free to try and dissect the results yourselves in the comments below. Related Video:

European car sales up 8% in February

Three weeks ago an analyst increased projections for European car sales this year, expecting them to climb three percent compared to last year instead of 2.7 percent. That number is a postive sign after years of hard times but it turns out February was especially good, overall European sales climbing eight percent on a wave of southern European recovery and discounts - and this comes after five months of gains including January's 7.2-percent jump over the year before.
The only country of Europe's five largest markets to post a decline was France, just as it did in January, Germany, the UK and Italy posting solid double-digit numbers, Spain rocking the charts with an 18-percent increase because of a government program to encourage trade-ins.
The only brand to miss the wave was Volkswagen, dropping 0.8 percent as it watched the double-digit growth at sister brands Audi, Seat and Skoda lift the Volkswagen Group sales up by seven-percent. Peugeot overcame flat sales at Citroën to improve the group by 3.5 percent, BMW and the Mercedes-Benz/Smart combo rose by four percent, the Fiat group jumped 5.8 percent, Ford was up 11 percent, the Renault Group 11.5 percent, General Motors 12 percent and the Toyota clan by 14 percent.

VW boss confirms Subaru-aping Golf Alltrack for US

Subaru needs to watch out, because the Japanese brand with a utilitarian image has a big bull's eye on its back. Not only is Acura considering going 100-percent all-wheel drive in a bid to mimic the successful automaker, Volkswagen has just confirmed that the Golf Alltrack is coming to the US as another competitor for Subaru's popular Outback crossover. Volkswagen Group of America CEO Michael Horn has confirmed the addition of the higher-riding, all-wheel drive version of the Golf SportWagen to Automotive News, indicating that the model will arrive in the US in 2016. "That's what our dealers, our customers, are asking us for," he said to the industry publication. The Golf Alltrack, which debuted at the Paris Motor Show in early October, has an extra 0.75 inches of ride height and protective black cladding all the way around. Its biggest mechanical differentiator from other Golfs is its Haldex all-wheel drive system, a setup that can completely unhook from the rear axle when not needed to save fuel. In Europe, the Alltrack is available with a turbocharged 1.8-liter with 178 horsepower and two diesels offering between 109hp and 182 hp. However, Horn made no mention of likely powertrains for the US. Horn tells Automotive News that all-wheel drive tooling is currently being installed at the Puebla, Mexico, factory where the standard Golf Sportwagen is built. VW might have tipped its hand about this possibility several months ago when press shots of the wagon were released for the US with TDI and 4Motion badges. Horn says he expects even the front-wheel drive version to be a sales hit here, suggesting it may eventually account for 50 percent of the Golf range's volume.