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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:

When Android Automotive goes in the dash, Google wins — and automakers lose data

You've gotta hand it to Google for the way the Silicon Valley tech giant has made indelible inroads into the car on multiple fronts. The most obvious is with its pioneering self-driving car technology that's caused car companies to get their act together on autonomous vehicles — and also collaborate with Google. Google has more directly extended its influence and data-mining capabilities into the car with its Android Auto smartphone-projection platform that most major automakers have adopted along with Apple's CarPlay. And now it's preparing to dig even deeper into dashboards by deploying its open-source operating system, Android Automotive, beginning with Audi and Volvo. Volvo recently announced that its next-generation Sensus infotainment system will run Android Automotive as an OS and include Google's Play Store for cloud-based content, Maps for navigation and Google Assistant for voice recognition, which can even command a car's climate control. By embedding Google in the dash, Volvo says owners will get an improved connected experience. "Bringing Google services into Volvo cars will accelerate innovation in connectivity and boost our development in applications and connected services," Volvo senior vice president of R&D Henrik Green said in a statement. "Soon, Volvo drivers will have direct access to thousands of in-car apps that make daily life easier and the connected in-car experience more enjoyable." Having Android Automotive onboard could benefit drivers — and provide a big win for Google, since it opens a deep and lucrative new data-mining vein for the company. But it's a wave of a white flag for car companies when it comes to delivering their own cloud-based content and services. It also represents a massive data giveaway and, for Audi, a reversal of earlier reservations about letting Google get too much access to car data. Not long after Android Auto and Apple CarPlay were introduced in 2014 and most automakers eagerly embraced the technologies, several German automakers second-guessed their decision when they realized what was at stake: data. At a conference in Berlin in 2015, Audi CEO Rupert Stadler said car owners "want to be in control of their data, and not subject to monitoring." A few months earlier, Stadler stated that "the data that we collect is our data and not Google's.

Don't buy that crossover! Buy a cladded wagon instead!

If you're looking to buy a car soon, and you're like most Americans, there's a strong chance you're considering buying a crossover SUV. That's what people want nowadays. People like the tough, tall exterior that suggests adventure and preparedness, they like the high seating position, they like the all wheel drive many have and they like the practicality. Because of this, crossovers have rapidly supplanted typical cars such as sedans, wagons, and more as the most popular vehicles in the country. But they're compromised, too. They're often heavy, thirsty, and expensive compared with more conventional cars. The good news is, there's an alternative, a happy medium between the straight crossover and the traditional car. They're lifted wagons, and they're the best crossover SUVs around. And for those who may not know what we're talking about, we're talking about cars and wagons that have been given a suspension lift for more ground clearance and a higher ride height, and often have all wheel drive standard or optional. They also usually have chunky plastic body cladding to make them look tough and durable. Examples include the Subaru Crosstrek, Audi A4 Allroad, Buick Regal TourX, and Volkswagen Golf Alltrack, among others. Because of the suspension and body modifications, these vehicles fit the trendy crossover mold quite well. And in the case of long-running nameplates such as the Subaru Outback and Volvo Cross Country models, they even have some heritage as outdoorsy machines. They also provide the higher driving position that crossover buyers love. And in some cases, such as with the Golf Alltrack, we've learned they offer better ride quality than their road-oriented siblings. View 9 Photos So these tall wagons offer the key things crossover buyers want, but what makes them better than traditional crossovers is that they have the advantages of the cars they're based on. For instance, the aforementioned Golf Alltrack still drives mostly like a Golf, which is to say, it's nimble, feels peppy, and is easy to maneuver because of its relatively small size. We can't really say the same for the Tiguan, which feels generally more sluggish and uninteresting than the Alltrack. And we mention Volkswagen's compact crossover because it starts at nearly the same price as the Alltrack. Some of the difference in giddy-up can be explained by weight. Normal crossovers can be fairly portly, while these lifted wagons are notably lighter.