2007 Volkswagen Beetle on 2040-cars

Auto blog

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:

Ram and Alfa Romeo top J.D. Power study of best automaker websites

Imagining a new car can be terrific fun, especially if the new car is an Alfa Romeo. So say the fantasy engineers at the J.D. Power agency, who’ve found that Alfa and Ram, sister brands under the Stellantis umbrella, offer potential buyers the most attractive consumer websites, which are often their first viable encounter with those vehicles. Power found that those marques lead the mass market and premium categories in its twice annual Manufacturer Website Evaluation Study. In the premium segment, Alfa Romeo led with 755 points, up six points over BMW, 10 points ahead of Infiniti, 14 points past of Jaguar, and 18 points up on Porsche. By contrast, Volvo and Audi trail the pack with 689 points, and are behind Genesis (699 points), Tesla (720), and Cadillac (721), all of which perform worse than the premium segment average of 724 points. The summerÂ’s study showed that in the mass market segment, Ram leads with an impressive 735 points, which puts it six points ahead of GMC, seven points atop its stablemate Jeep, eight points beyond Subaru, and 22 points ahead of the industry average. Volkswagen finished dead last among mass market names, but only one point behind Ford, 684 to 683 out of a possible 1,000. Segment average, as noted, was 713 points. “Website satisfaction can be volatile, and automotive websites are not immune to changing preferences,” said Jon Sundberg, director of digital solutions at J.D. Power. “However, manufacturers have shown to be very agile when it comes to website design and ensuring their sites meet modern standards, more so than many other industries, as exemplified through the study data.” Marketing/Advertising Alfa Romeo Audi BMW Ford Volkswagen

Tanner Foust drifts Rockstar Passat around US Cycling TT course

The USA Cycling Time Trials take place on Saturday in Chattanooga, TN. That's also where Volkswagen has its US headquarters. So in honor of the event, VW decided to have a little fun involving Tanner Foust and a 900-horsepower Rockstar Drift car. That's a 900-hp Passat, by the way. Pro cyclist Tim Johnson rides along with Foust, showing him the intricacies of the cycling TT course. But of course, with a 900-hp drift car at his disposal, Foust makes use of roundabouts and turnaround points to do what he does best. We won't spoil the rest of the short, minute-and-fifteen-second video posted above. But if you like smoky drifts from super-modified midsize sedans, this clip is for you.