2011 Volkswagen Jetta Se on 2040-cars

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2021 BMW M3/M4 and Volkswagen ID.4 revealed | Autoblog Podcast #646

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by West Coast Editor James Riswick. Together, they tackle a week's worth of big news, including the reveals of the BMW M3 and M4 and Volkswagen ID.4, as well as Tesla's Battery Day. Greg's been driving the long-term Subaru Forester, and gives us an update on that, while James discusses the current state and direction of Cadillac after driving the CT5. Then, the two dads talk about child seat safety, as well as random things they've learned from having children of their own. Autoblog Podcast #646 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2021 BMW M3 and M4 revealed with a standard manual and up to 503 horsepower 2021 Volkswagen ID.4 breaks cover with 250-mile range Why the Volkswagen ID.4 is a Very Big Deal Elon Musk promises $25,000 car, EV battery cell that costs half — but not soon 2022 Tesla Model S Plaid coming with three motors and more than 1,100 horsepower Cars we're driving: Long-term 2019 Subaru Forester 2020 Cadillac CT5 A conversation on child car seats Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Green Podcasts BMW Cadillac Subaru Tesla Volkswagen Safety Coupe Crossover Electric Luxury Performance Sedan

West Virginia researcher describes how Volkswagen got caught

The cheating scandal engulfing the world's largest automaker started with a road trip. In the spring of 2014, researchers from West Virginia were evaluating the tailpipe emissions of diesel cars made for the American market by European manufacturers, something never before studied in the academic realm. Excited by the prospect of breaking new ground, the team of two professors and two students wanted to gather as much data as possible. "And being academics, we went a little overboard," said Arvind Thiruvengadam, one of the students. "Being academics, we went a little overboard." Overboard included driving the cars for more miles than they needed to test and verify results. Drivers put about 1,500 miles on each of the first two cars in the study, a Volkswagen Jetta and BMW X5, along California roadways. For their final car, a Volkswagen Passat, they wanted even more mileage. So they took the car on a road trip from Los Angeles to Seattle and back again, collecting data from more than 2,000 miles of testing. The road trip was Volkswagen's undoing. When the West Virginia team returned to Los Angeles, they were befuddled by the test results. In theory, the Passat should have spewed the lowest levels of pollutants among the three cars. Equipped with the more modern selective catalytic reduction technology, the team expected to find minimal levels of nitrogen oxide. But the car, which had been certified at a California Air Resources Board facility prior to the start of the road trip, had elevated levels of NOx that were 20 times the baseline levels established beforehand. The researchers, comprised of professors Gregory Thompson and Dan Carder and students Marc Besch and Thiruvengadam, knew their on-board equipment functioned properly because, early in their research, they had double-checked its accuracy after recording sky-high NOx readings from the Jetta that showed 30 times the level of its baseline testing at the CARB facility. It was particularly noteworthy because the Jetta contained the first-generation Lean NOx Trap technology, not the more efficient SCR, yet both produced large discrepancies. The BMW, on the other hand, performed as expected. Today, Thiruvengadam is careful to say the research team never suspected Volkswagen of cheating on emissions testing, nor did the researchers report such a finding. They merely reported their findings to CARB officials who then further investigated.

VW teases GTI Supersport Vision Gran Turismo concept

Volkswagen was among the first to demonstrate its Vision for Gran Turismo with the GTI Roadster concept, last year. And now it's gearing up to release another one. Previewed in the video clip above and the images in the gallery below, the new GTI Supersport is once again conceptually based on the German automaker's iconic hot hatch. But instead of a roofless design rendered in red, this one has a fixed roof with pseudo NACA ducts and white bodywork, along with twin nostril air extractors in the hood, a giant carbon-fiber rear wing and diffuser, and large side vents. In short, it looks like it'll be awesome, and we'll likely see the full thing before too long – so watch this space.