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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:

Autoblog Podcast #389

Episode #389 of the Autoblog podcast is here, and this week, Dan Roth, Chris Paukert, and Mark Pereira from Autoblog Canada talk about Johan deNysschen's move to Cadillac, rumors of more BMW nomenclature changes, a second generation for the Subaru BRZ, and cars from 2004 that we miss. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #389: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: Johan de Nysschen moves to Cadillac BMW model designations changing even more Subaru BRZ getting second generation Cars We Miss In the Autoblog Garage: 2014 Ducati 899 Panigale 2015 Hyundai Sonata 2015 Volkswagen GTI 2015 Chevrolet Silverato 2500 Diesel Hosts: Dan Roth, Chris Paukert, Mark Pereira Runtime: 01:59:10 Rundown: Intro and Garage - 00:00 Johan deNysschen - 36:12 BMW Nomenclature - 53:58 BRZ - 56:27 Cars We Miss - 01:05:07 Q&A - 01:30:09 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Auto News Hirings/Firings/Layoffs Podcasts BMW Cadillac Chevrolet Hyundai Subaru Volkswagen

Jaguar Land Rover seeks to block U.S. imports of Porsche, Audi, Lamborghini, VW SUVs

You wouldn’t know it was about Jags and Lambos, to judge by its rather dry name: In the Matter of Certain Vehicle Control Systems. But thatÂ’s the complaint Jaguar Land Rover Automotive Plc filed on Thursday to block U.S. imports of Porsche, Lamborghini, Audi and Volkswagen sport utility vehicles it says are using its patented Terrain Response technology without permission. Jaguar Land Rover, a British carmaker owned by IndiaÂ’s Tata Motors Ltd., said in its filing with the U.S. International Trade Commission that the technology helps negotiate a “broad range of surfaces” and is a key feature in JaguarÂ’s F-Pace and Land Rover Discovery vehicles. “JLR seeks to protect itself and its United States operations from companies that have injected infringing products into the U.S. market that incorporate, without any license from JLR, technology developed by JLR and protected by its patent,” JaguarÂ’s lawyer, Matthew Moore, said in the filing. Representatives of Volkswagen didnÂ’t immediately respond to emails seeking comment on the complaint. Jaguar wants to block imports of PorscheÂ’s Cayenne; LamborghiniÂ’s Urus; AudiÂ’s Q8, Q7, Q5, A6 Allroad and e-tron vehicles; and VWÂ’s Tiguan vehicles. It said there are plenty of other luxury midsize SUV and compact crossover vehicles to meet consumer demand if the SUVs are banned from the U.S. Still, the premium Porsche and Audi lines provide much of the profit VW is using to fund its investments in technology for electric vehicles, autonomous vehicles and further innovations. In addition to the four brands, Volkswagen Group owns other upscale nameplates, including Bentley and Bugatti. The International Trade Commission is an independent, quasi-judicial agency that investigates complaints of unfair trade practices, like patent infringement. It canÂ’t award damages but does have the power to block products from entering the U.S. Owners of patents and trade secrets like it because it can work faster than the federal district courts -- the typical investigation is completed in 15 to 18 months. But Jaguar also filed patent lawsuits against the companies in federal courts in Delaware and New Jersey, seeking cash compensation for the use of the technology. Those cases are likely to be put on hold once the trade commission launches its investigation. The case is In the Matter of Certain Vehicle Control Systems, 337-3508, U.S. International Trade Commission (Washington).