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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:

Editors' Picks March 2022 | Acura RDX, VW GLI and a Rolls-Royce

This month's Editors' Picks offer a little something at every budget. We call out a performance car as cheap as the Volkswagen GLI, but the Rolls-Royce Ghost also manages to make its way on to the list. Of course, very few folks can afford a Ghost, but that doesn't change the fact that it's an engineering master class. In addition to these options, we also dive into the compact luxury SUV market, one that is bursting with choices. In case you missed our previous Editors' Picks posts, here’s a quick refresher on whatÂ’s going on here. We rate all the new cars we drive with a 1-10 score. Cars that are exemplary in their respective segments get EditorsÂ’ Pick status. Those are the ones weÂ’d recommend to our friends, family and anybody whoÂ’s curious and asks the question. The list that youÂ’ll find below consists of every car we rated in March that earned an EditorsÂ’ Pick. 2022 Acura RDX Quick take: The RDX ticks a lot of boxes for a great price. It drives better than expected, offers excellent tech, has plenty of room and even looks the part. Score: 7.0 What it competes with: Mercedes-Benz GLC-Class, BMW X3, Volvo XC60, Audi Q5, Lexus NX, Infiniti QX50, Alfa Romeo Stelvio, Genesis GV70, Porsche Macan, Jaguar F-Pace, Lincoln Corsair Pros: Value, driving dynamics, space Cons: Infotainment is polarizing, midgrade interior From the editors Road Test Editor Zac Palmer — "The RDX is a bit of a sleeper in this segment. It drives far better than many of its competitors, and it doesn't let you down in any particular area. If you were thinking of buying an entry-level option from one of the Germans, make sure you take the RDX into account, because you'll likely end up with more tech and features for an even lower price. News Editor Joel Stocksdale — "The Acura RDX is an impressive value in the small luxury SUV segment. It starts in the low $40,000 price range, and provides loads of standard convenience and safety features. Everything is packaged in a sharp and surprisingly spacious package, too. It's also nimble and has a punchy engine that makes it fun to drive. You may find some competitors that surpass it in some areas, but the Acura offers about the most for the money of anything in the segment." In-depth analysis: 2022 Acura RDX Review | Value-packed and surprisingly sporty   2022 Volkswagen Jetta GLI Quick take: The GLI offers excellent driving dynamics and great styling for someone who doesn't want a hatchback. It's pricey, but it's worth it.

Thanks to VW, BMW's 2017 diesels will be delayed

BMW confirmed Monday that US sales for its model-year 2017 diesel vehicles will be delayed because US regulators are taking longer than expected to certify the models. Bimmer, which sells diesel-powered 3-Series, 5-Series, X3, and X5 vehicles in the US, didn't give a timetable of when such domestic sales would start. Autoguide had previously reported of the potential delay for sales of US diesels, which account for about six percent of BMW's total sales in the US. "The product certification of all MY2017 BMW diesel models (328d Sedan, 328d Sports Wagon, X3 xDrive28d, X5 xDrive35d) has been delayed due to testing logistics," BMW spokeswoman Rebecca Kiehne wrote in an e-mail to Autoblog. "As a result, production of these models will commence once homologation has been finalized." US regulators appear to be taking a more deliberate approach to certifying diesel vehicles in the wake of the Volkswagen diesel-emissions scandal, which broke last September. Late last month, VW reached a settlement with US regulators that will cost the German automaker about $15 billion. With about a half-million impacted VW vehicles on US roads, the company will repurchase cars, end leases early, maybe fix some vehicles, and improve zero-emission vehicle technologies. Additionally, last week, VW reportedly told US dealers that they'd be compensated an undisclosed amount for their troubles. Some 2016 BMW diesel models were already subject to more stringent US testing procedures because of the VW situation. The BMW X5 xDrive35d was among the models that underwent more rigorous testing from the US Environmental Protection Agency (EPA) late last year. Other diesel models that received the additional scrutiny included General Motors' 2016 Chevrolet Colorado and GMC Canyon. Related Video: