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New info on how VW, Porsche, Audi V6 TDI engine cheat works

The German newspaper Bild am Sonntag is reporting that US investigators have found three pieces of software that work in concert to turn off the emissions control equipment in certain diesel models after a set period of time. The engine in question, the 3.0-liter TDI turbodiesel, was found in certain Volkswagen Touareg, Audi Q7, and Porsche Cayenne models – the sale of which was suspended in the US late last year. Since most emissions compliance testing takes around 20 minutes, the software in the three VW Group models shuts off the emissions control equipment after 22 minutes, a straightforward end run around the testing. Remember that the 3.0-liter TDI engines aren't included in the big buyback and recall program announced for the smaller 2.0-liter, four-cylinder TDI engines. The 3.0-liter engines will likely get their own program, but we don't know when to expect it or exactly what it will look like. Last month, California rejected a proposed fix for the larger TDI engines, and VW went back to the drawing board. Since the company is unlikely to create two fixes, one for California and one for the rest of the nation, the company can't really proceed until they figure out a solution California will accept. The EPA hasn't officially commented on the report, and we don't know how Bild am Sonntag came across the information, but we'll be closely watching what emerges after this report. Related Video:

TRANSLOGIC 147: CES 2014 Autonomous Vehicles

We head back to CES in Las Vegas to check on the progress of autonomous vehicles in 2014. We go hands-free on the highway with Audi, narrowly avoid a collision with Ford and hear all about BMW's drifting driverless car. But first we take a ride on Induct's self-driving Navia shuttle.

The Audi Q7 doesn't want me to speed and I'm not totally okay with that

I'm a big fan of adaptive cruise control. My commute is 50 miles each way, almost all on freeways here in Michigan. If everyone drove at the same speed there'd be little need for smart cruise, but I live in reality where people camp out in the left lane and practice going from the gas to the brake for no apparent reason. Radar cruise systems let me set my max speed and just worry about steering. But Audi has gone a step further with its adaptive cruise system. And it's a step I'm not sure I'm comfortable with. Audi's system, as featured on the new Q7, has a feature that uses the forward-facing camera to read speed-limit signs, something that's becoming common in Europe and is now making its way here in the continent's luxury cars. That part's fine; it's useful information and gets nicely integrated into Audi's Virtual Cockpit screen and on the head-up display. What the car then does with that info, however, is the issue: If your set cruise speed is higher than the speed on a sign you pass, the car will drop the cruise speed down to the limit. But it's not perfect. On one stretch of highway, the Q7 picked up the speed limit posted on the parallel service road, dropping me down from a little above the limit to 30 mph. It didn't slam on the brakes, but it did confuse me at first and require intervention before the car slowed down to a crawl. This feature isn't ready for primetime. Luckily, it can be turned off or switched to a mode where it gives you a warning that the speed limit has changed (or at least that the car thinks it has) and lets you react before the set cruise speed is changed automatically. When activated, it's a safety issue. A more serious one, in my opinion, than driving a little over the speed limit, especially when it means interrupting the flow of traffic. There's nothing predictable about a car trundling along in the fast lane and then completely letting off the gas. It's not predictable for the driver behind you, and it's not something a driver expects of their own vehicle. Yes, this feature was obviously developed for people driving on the Autobahn, where speeds can drop down from unlimited to a slow crawl pretty quickly when entering a construction zone or approaching a built-up area. German roads also have more consistent signage, so the false-positive scenario I experienced might not have come up there.