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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:

Volkswagen NMC production guise caught in China

Chinese car site Autohome has what are said to be the first pictures of the Volkswagen New Midsize Coupe concept in production form. VW's NMC was just introduced at the Beijing Motor Show, while background chatter indicated it would go on sale in China, Autohome says that production version will be built at the Shanghai-Volkswagen plant in Ningbo, and the retail guise could be introduced at the Guangzhou Motor Show in November and go on sale that same month.
Assuming this is the production car, its main lines have made the jump from the concept but with less fine detailing, a silver hue and with conventional VW wheels it's lost a little bit of oomph. Still, a few checkmarks on the option sheet can fix most of that, the shape remains handsome and the 2.0-liter turbo underhood keeps performance peppy and mileage frugal enough. You can head to Autohome for a couple more photos of a sedan we'd be happy to make room for over here.

Volkswagen Scirocco GTS set for Shanghai reveal

Though we still can't get one over here, buyers in other markets can get the Scirocco in an array of trim levels. And at the Shanghai Motor Show this month, Volkswagen is introducing another. The new Scirocco GTS slots between the base models and the R performance version. Reviving the spirit of the original introduced more than 30 years ago and picking up where the last model left off, the new GTS splits the Scirocco lineup the way the GTI fits into the Golf range. It even packs the GTI's engine: a 2.0-liter turbo four with 210 hp, mated to either a six-speed manual or DSG. The GTS also packs standard 18-inch (or optional 19-inch wheels), a further departure from the R-Line aero kit and racing stripes running up the top. The interior is similarly upgraded with special trim, a golf-ball shifter (on manual versions) and more. All of this makes the Scirocco an even more tempting proposition – if only we could get our hands on one. Wolfsburg/Shanghai, 16 April 2015 Comeback of a GT icon: World premiere of the 220 PS Scirocco GTS in Shanghai - Exclusive GTS trim with new 18-inch alloy wheels - Scirocco GTS* has a new generation of infotainment equipment on board as standard Ten key facts about the Scirocco GTS*: 1. The new Scirocco GTS makes its debut as a separate and especially sporty GT version 2. 220 PS Scirocco GTS has a top speed of 246 km/h and accelerates from 0 to 100 km/h in 6.5 seconds 3. Individualised exterior with new 18-inch alloy wheels and optional GTS decor (decor standard in China) 4. Red brake callipers as an identifying feature 5. Exclusive GTS interior with black trim features, red stitching and the legendary golf ball gear knob 6. Included as standard: the "Composition Colour", from the latest generation of infotainment systems 7. Modular infotainment matrix (MIB II) available for all Scirocco models from the end of May 8. The Scirocco GTS can also be ordered with an extremely quick-shifting 6-speed DSG gearbox as an option 9. The spirit of the first Scirocco GTS (which made its debut in 1982) was carried forward into the year 2015 in the new GTS 10. With over a million sold, the Scirocco is one of the most successful sports cars in the world Some cars live for ever because they are constantly reinvented. The Scirocco, a pure-bred European sports car, is one of these cars that is forever young. Presented at the Geneva Motor Show in March 41 years ago, it became an icon of compact German coupes.