2003 Vw Volkswagen Jetta 1.8t Wolfsburg Edition Modified 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:

Head of dieselgate clean up set to leave Volkswagen after a year on the job

After just over a year on the job, Volkswagen's compliance chief Christine Hohmann-Dennhardt is set to leave the automaker by the end of the month. In an announcement, Volkswagen confirmed the departure, saying the separation was due to a difference of opinions regarding the role and duties of the compliance chief. Automotive News Europe reports that there were frequent clashes between Hohmann-Dennhardt and senior Volkswagen employees. Hohmann-Dennhardt was brought in on last year to help manage the cleanup in the wake of the diesel emissions scandal. She came over to Volkswagen from Daimler, parent company of Mercedes-Benz. Before that, she served as a judge in Germany's constitutional court. Volkswagen hasn't announced a replacement. Related Video: News Source: Automotive News EuropeImage Credit: Getty Green Hirings/Firings/Layoffs Audi Volkswagen Emissions Diesel Vehicles dieselgate diesel emissions volkswagen diesel

Volkswagen drops "GTi" lawsuit against Suzuki

Way back in 2004, Volkswagen took umbrage with Suzuki being granted permission to use the nameplate "SWIFT GTi" for a performance variant of its small-car offering (2012 equivalent seen here). Now, eight years and surely some very steep legal bills later, VW has finally dropped its claim against Suzuki.
The General Court of the European Union stated, back in March of this year, that Suzuki's GTi registration could not be confused with VW's "Golf GTI." Volkswagen had appealed that ruling, though has now reportedly called off the dogs. In fact, Germany's Die Welt reports that the appeal has been dead for several weeks now.
This news comes amongst continued arbitration acrimony between the two automakers, all revolving around VW's forced divestiture of nearly 20-percent stake it purchased in Suzuki some two years ago.