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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:

Winterkorn kept diesel scandal secret, letter claims

Former Volkswagen Group CEO Martin Winterkorn allegedly kept quiet for two weeks about emissions defeat devices in the company's models. US officials eventually made the automaker's deception public on September 18th. "In the conversation on 03.09.2015 with the regulator CARB (California Air Resources Board), the defeat device was admitted," an employee told Winterkorn on September 4, according to Reuters citing Germany's Bild am Sonntag. Based on this information, Winterkorn had plenty of time to admit the problem. Evidence like this letter continues to suggest top figures knew about the emissions problem. In addition, a separate Bild am Sonntag report recently claimed that an employee emailed Winterkorn in May 2014 to tell him US regulators could discover the cheating. In the lower echelons of the company, the deception was allegedly an open secret among engineers as early as 2006, and people kept quiet even after workers tried to admit what was happening. This culture of secrecy seems to go even deeper than just the diesel emissions scandal. For example, engineers admitted that they cheated on CO2 tests to meet the company's strict standards. According to Green Car Reports, these problems also affected the US. In 2004, an Audi worker in America allegedly discovered an issue with the exhaust gas temperature sensor in some vehicles, but a German executive said not to admit the problem to US regulators. It's not clear whether any high level employees tried to fix the diesel emissions issue or if they simply kept the problem hidden. The company's internal report, which is due in the latter half of April, might address that concern. So far, the VW Group has said only a small group of people caused the scandal. However, these many allegations to the contrary make that claim difficult to believe. Related Video:

2015 VW e-Golf coming to ZEV states for $35,445* this November

Is $6,465 too much to get someone thinking about buying a Nissan Leaf to opt for the Volkswagen e-Golf instead? That's the price difference between the current EV sales champion, which now starts at $28,980, and the just-announced price for the e-Golf, which will sell for $35,445 in the US when it arrives in about ten states (basically, the ZEV states that follow California's lead in zero-emission vehicle rules) this November and will qualify for the federal tax credit of up to $7,500. VW says that the extra money will get you "the most versatile electric vehicle in its class." There is only one trim line, the SEL Premium, which will be the first VW in the US with all-LED headlights. The car's powertrain numbers pretty much match the Nissan Leaf, though. The e-Golf has a 24.2-kWh lithium-ion battery (the Leaf has a 24-kWh pack) and a 115-hp, 199-pound foot electric motor (107 hp,187 lb-ft in the Leaf). The e-Golf's official EPA numbers are not yet available, but VW says it will have an "average range between 70 and 90 miles." The Leaf has an official EPA range of 84 miles. The e-Golf has a better onboard charger – 7.2 kW vs. 3.6 or 6.6, depending on your Leaf's options – and has SAE Combo fast charging capability as standard. VW is also working with 3Degrees to offset all of the emissions "created from production, distribution and charging of the e-Golf for up to approximately 36,000 miles of driving." VW also announced prices for its lightly facelifted 2015 Jetta today. The base model, the 2.0-liter S with a manual transmission, starts at $17,325 while the top-of-the-line model, the Hybrid SEL Premium, will set you back at least $31,670. The lowest-cost TDI is the S manual, which starts at $21,640 and features VW's new 2.0-liter diesel four. A new limited-edition 1.8 Sport model with a firmer suspension, tinted taillamps and rear spoiler starts at $20,895. All VW prices listed exclude VW's *$820 destination charge and you can find all the details on trim lines in the press releases below.