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2016 VW diesels are still 'months' out

Many 2016 model year vehicles are already for sale at dealers in the US but none of them have Volkswagen's 2.0-liter TDI. Don't expect to see the diesels on lots for several months either. The Environmental Protection Agency is preparing an onslaught of evaluations on the engine to make sure that it doesn't get fooled again, Automotive News reports. Before the new tests can even begin, VW must resubmit the 2016 diesels to the EPA, and the company isn't saying when that might be. The automaker took back the models' previous application after telling the EPA about an undisclosed software feature, according to Automotive News. There was absolutely no evidence that this was another defeat device, but the emissions agency wanted more information about what the tech's effect was. EPA boss Christopher Grundler has been quite clear about not disclosing any details about the new tests. He doesn't want to give automakers a chance to create more defeat devices, and the agency intends to evaluate diesels from other companies with more rigor, too. That process is already beginning in cases like subjecting the 2016 Chevrolet Colorado Duramax to on-road emissions checks. Once the 2016 VW models are certified, the EPA intends to run the same tests on the proposed repairs for the company's earlier diesels. That process could take months, as well, according to Automotive News. VW CEO Matthias Muller recently said that the first recalls likely wouldn't happen until January.

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:

Carmakers ask Trump to revisit fuel efficiency rules

Car companies operating in the US are required to meet stringent fuel efficiency standards (a fleet average of 54.5MPG) through 2025, but they're hoping to loosen things now that President Trump is in town. Leaders from Fiat Chrysler, Ford, GM, Honda, Hyundai, Nissan, Toyota and VW have sent a letter to Trump asking him to rethink the Obama administration's choice to lock in efficiency guidelines for the next several years. The car makers want to revisit the midterm review for the 2025 commitment in hopes of loosening the demands. They claim that the tougher requirements raise costs, don't match public buying habits and will supposedly put "as many a million" jobs up in the air. The Trump administration hasn't specifically responded to the letter, although Environmental Protection Agency nominee Scott Pruitt had said he would return to the Obama-era decision. The automakers' argument doesn't entirely hold up. While the EPA did estimate that the US would fall short of efficiency goals due to a shift toward SUVs and trucks, the job claims are questionable. Why would making more fuel efficient vehicles necessarily cost jobs instead of pushing companies to do better? As it is, even a successful attempt to loosen guidelines may only have a limited effect. All of the brands mentioned here are pushing for greater mainstream adoption of electric vehicles within the next few years -- they may meet the Obama administration's expectations just by shifting more drivers away from gas power. This article by Jon Fingas originally appeared on Engadget, your guide to this connected life. Related Video: News Source: ReutersImage Credit: Daniel Acker/Bloomberg via Getty Images Government/Legal Green Chrysler Fiat GM Honda Hyundai Nissan Toyota Volkswagen Fuel Efficiency CAFE standards Trump