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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:

Tesla Model Y and Cadillac CT5 | Autoblog Podcast #573

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Consumer Editor Jeremy Korzeniewski and Associate Editor Joel Stocksdale. They catch up on the Tesla Model Y, as well as the Cadillac CT5 and the brand's new naming structure. Afterward they talk about our driving the 2019 Mazda3, 2019 Volkswagen Golf GTI and 2019 Ford Ranger. Finally, the three editors take a lap around eBay looking for the best ways to spend $15,000 on a car. Autoblog Podcast #573 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Tesla Model Y unveiled Cadillac CT5 and Cadillac's new badging strategy Cars we're driving: 2019 Mazda3 2019 VW Golf GTI 2019 Ford Ranger How we'd spend $15,000 on eBay Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Red Bull says VW deal in F1 now 'up in smoke'

The Volkswagen diesel scandal will likely have long-term repercussions, reverberating across the industry potentially for years to come – the likes of which we're only beginning to discover. And that could include Formula One. Now if you're thinking that VW doesn't compete in F1, you're right. Even between all of its various brands, the group has little history in post-war grand prix racing. But if was getting close. As we reported last week, the German auto giant and the Red Bull Racing team were nearing an agreement that would (or would have) seen the former take over the latter. The deal was said to include VW developing a new power unit (as the combined turbo engine and electric motor are referred to in the sport) and acquiring the multiple championship-winning team, with the energy drink company that now owns it transitioning back to a more traditional sponsorship role. It remained to be seen, though, just which of its many brands VW would choose to promote through the new program. Team principal Christian Horner, however, now says that the deal has "seemed to go up in smoke." That doesn't mean that it's off the table entirely and indefinitely, but it would follow logically that between the scandal it's currently facing, the ensuing change in leadership, and drop in stock value, the board in Wolfsburg has other problems to focus on and devote its resources. While ostensibly a logical move for Volkswagen, that would leave Red Bull in a difficult position. The Renault partnership that once led to utter domination with four back-to-back world championships has since fallen dramatically off pace. Although it impressively held on last season to come second in the championship with three race wins, it hasn't won a race yet this season – and heading into this weekend's Japanese Grand Prix, stood fourth in the standings... its worst position since 2008. "With the way the regulations are, unless you have a Mercedes or Ferrari power unit it is quite simply impossible to compete," said Horner. "And if we are not able to compete, then you have to question what is the validity of remaining in F1." If the Volkswagen deal does indeed fall through, the team will likely need to buy its power units from another supplier – with its chief rivals as the only likely candidates. Related Video: