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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:

VW takes world sales crown from Toyota for first half of 2015

Despite uncertainty in major markets like Russia and China, Volkswagen is wearing the global sales crown for the first half of the year to overtake Toyota. Through the first six months of 2015, VW sold 5.04 million vehicles, which only narrowly beat its Japanese rival's 5.02 million, Reuters reports. The half-year trophy also placed the German brand one step closer to the goal of being the world's largest automaker. VW can't just cruise through the second half of 2015 to continue wearing the crown, though. The company is a major player in China, and that might start to be a disadvantage soon. Auto demand there is expected to be weak for the rest of the year, which could mean dire effects for companies around the world. According to Reuters, the Western European market shows few signs of a sudden surge, either. To turn things around, VW is working on a massive realignment to be more responsive by organizing its 12 brands under four separate holding companies. One factor in VW's favor is that Toyota is facing its own sales struggles across the globe. In the last fiscal year, the Japanese automaker had growing profits but actual volume was down. At the time, the company predicted a drop to 8.9 million vehicles for the current fiscal period. According to Reuters, Toyota has had problems growing in emerging markets and dealing with higher taxes on small vehicles in Japan. For all of 2014, Toyota held the sales trophy with 10.23 million sales, and VW was in second place with 10.14 million. General Motors came in third with 9.92 million. The year was the first time that VW or Toyota had ever surpassed 10 million vehicles over the stretch of a calendar. Related Video:

Munich Motor Show recap | Autoblog Podcast #797

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale. Joel just returned from attending the Munich Motor Show, and our editors do a roundup of the news from the event, including an eventual baby G-Wagen, Cupra DarkRebel, VW ID. GTI, BMW Vision Neue Klasse, Mercedes CLA concept and some new electric Minis. They also discuss the general vibe of the show. Joel has also been driving the refreshed VW ID.4 and the new ID.7. Finally, Greg interviews Rod Alberts, the executive director of the Detroit Auto Show with a preview for next week. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #797 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2023 Munich Motor Show Mercedes baby G-Wagen is in the works, CEO confirms Cupra DarkRebel is a striking shooting brake concept VW ID. GTI Concept is an electric hot hatch and it's headed to production VW ID. GTI has lines that connect it to ... an Oldsmobile BMW Vision Neue Klasse revealed with stunning design, huge EV improvements Mercedes-Benz Concept CLA Class is huge tech in a small, bright package 2025 Mini Cooper E and SE fully revamped and revealed at Munich Motor Show 2025 Mini Countryman goes electric, gets bigger at Munich Motor Show Cars we're driving 2024 VW ID.4 2024 VW ID.7 Interview with Rod Alberts, Executive Director of the North American International Auto Show Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: Green Podcasts Detroit Auto Show BMW Mercedes-Benz MINI Volkswagen Electric Luxury Performance Munich Auto Show Cupra Podcasts