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To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

VW quite interested in solid-state batteries for EVs

Volkswagen is about to make a decision about which advanced battery technology the automaker will seriously investigate to give its electric vehicles more range. VW will decide by July if it will use solid-state batteries made by US-based QuantumScape Corp. in future EVs, according to Bloomberg News. Last year, VW bought a five-percent stake in QuantumScape, which was founded by ex-Stanford University researchers. The lure is that QuantumScape's solid-state batteries may provide a single-charge range of as long as 430 miles. That's more than three times the current range of the VW e-Golf electric vehicle the company recently started selling to the public and is substantially longer than the single-charge range of the Tesla Model S electric sedan. The batteries are also fireproof, making VW's potential decision one with an eye towards more vehicle safety. Solid-state battery technology, in which solid lithium electrodes are used instead of liquid electrodes such as those in lithium-ion batteries, are the subject of research at other automakers and suppliers as well. Toyota says they could be here by 2020. Recently, the cordless vacuum cleaner maker Dyson acquired a $15-million equity stake in Michigan-based battery maker Sakti3 with the idea of using the startup's solid-state batteries in its products. General Motors also has a minority stake in Sakti3, which was spun off from the University of Michigan.

VW Tiguan grows up, gets bigger

The compact crossover segment continues to do huge business around the world, and Volkswagen is showing just how important the niche is by debuting four versions of the all-new, second-generation Tiguan at the Frankfurt Motor Show. Now riding on VW's MQB platform, the latest version has had a growth spurt, but it has also shed 110 pounds in the process. The first of them will hit the international market in April 2016. While the design is still definitively a VW, the latest Tiguan looks more aggressive and expands to 2.4-inches longer, 1.2-inches wider, 1.3-inches lower. There's also three more inches of wheelbase than the outgoing generation. At the front, the grille stretches all the way across and connects with the headlights to visually widen the look even more. In profile and at the rear, things are now a bit more angular, but the changes give the model a more chiseled style. In Fall 2016, VW will debut an even longer wheelbase body for the Tiguan. According to the company, this version will be aimed directly at customers in the US and China that prefer larger vehicles. The added inches outside translate to more room for passengers and cargo inside. Even with the seats up, there's an extra 1.8 cubic feet for stuff in the back, and those sitting in the rear get 1.1 inches more knee room. As an added amenity, buyers can option a 12.3-inch Active Info display digital instrument panel. Europeans gets a choice of eight engines: four fueled by gasoline and four by diesel. They range in power from 123 to 237 horsepower. Expect far fewer options when the Tiguan eventually arrives on these shores. Both front-wheel drive and 4Motion are available, too. In addition to having standard, 4Motion, and R-Line variants on display in Frankfurt, VW also has the Tiguan GTE plug-in hybrid concept at the show. It combines a 1.4-liter TSI engine and an electric motor mounted to the six-speed DSG to offer a total system output of 215 hp. The 13 kWh lithium-ion battery also lets the PHEV cover 31 miles on electric power and get an estimated 124 miles per gallon on the European cycle. That's not too bad, but the roof also features solar cells that VW claims can add another 621 miles of driving range per year under ideal conditions.