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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.

How VW's hyper-efficient XL1 will influence the next Golf

In 2007, the European Union mandated fleet average CO2 emissions of 158.7 g/km. For 2015, that figure will drop to 130 g/km, and the target for 2020 is an ambitions 95 g/km. Thanks to some German politicking, that target will be phased in from 2020 to 2024, but it will still apply to 80 percent of passenger cars in that first year. In US miles per gallon, that's the equivalent of going from about 35 mpg to 42 mpg to 57 mpg. The current Volkswagen Golf is rated from 85 g/km of CO2 to 190 g/km depending on model - and zero for the e-Golf, so for the next-generation MkVIII hatch due in 2019, to meet the goal, Volkswagen engineers will need to introduce a bunch of new tricks. According to a report in Autocar, VW be mining its hyper-efficient XL1 for some of them.
Predictions for the next Golf include a variable-compression engine, an electric flywheel and an electric turbo, along with taking greater advantage of coasting. Volkswagen could be getting help from Audi with the electric turbo and variable-compression engine and electric turbo, with Audi already having shown off the former and brand technical boss Ulrich Hackenberg confirming the VW Group is working on the latter. It's possible the flywheel system could also have the mark of The Four Rings: Autocar mentions a British system that Volvo is testing, but the R18 e-tron Quattro racer has been using one for years.
The need for such features is because the company won't be able to net enough future gains from just aerodynamic improvements and advanced materials. As price will be a factor (the regulations are expected to "add hundreds of euros to the cost of building a car"), adding much more aluminum or carbon fiber is an unlikely option. We're told the next generation won't be longer or wider than the current car, and being Europe's most popular model, VW doesn't want to make a big bet on futuristic aero, but the report says the MkVIII will "likely" have "the most aerodynamic treatment yet seen on a production vehicle," the area where lessons learned from the XL1 will truly be seen.

2015 Volkswagen Golf SportWagen First Drive [w/video]

Volkswagen currently offers five Golf models in the US, and in just a few weeks it will add the 2015 SportWagen to the lineup. The previous version sold as the Jetta SportWagen, although it was technically a Golf. For the new model, VW product planners decided to align all the hatchbacks under the same name. The SportWagen employs the same engines as the Golf, but significantly stretches its new MQB architecture. The result is greater practicality in the form of cargo room. With the seats up the SportWagen holds 30.4 cubic feet, almost 8 more than the Golf. The gap widens to nearly 14 cu ft with the seats folded; a max capacity of 66.5 cu ft puts the SportWagen into compact crossover territory. That added functionality leads VW to think it can sway buyers shopping the likes of the Honda CR-V and Toyota RAV4. And with the high-mpg diesel variant – 31 mpg city, up to 43 highway – VW hopes to lure those considering fuel-sipping MPVs like the Toyota Prius V and Ford C-MAX. What separates this Golf from those other two segments is the driving prowess we've come to expect from Wolfsburg's best-selling nameplate. While the silhouette is similar to the outgoing Jetta wagon, designers honed the character lines to give the Golf SportWagen a more modern, angular aesthetic. The LED headlights look sharp, the hood now scoops down at a steeper angle into the front fenders, and the general proportions – in line with other Golf models – have changed. The new SportWagen is lower, longer, and wider and than the Jetta SportWagen it replaces. Specifically, it is 1.1 inches longer, 0.7 inches wider, and despite being about an inch lower, actually boasts more headroom. Inside, things look pretty familiar to the current Golf family. There are small, premium touches such as a sporty, flat-ish-bottom wheel, piano-black trim, and an optional one-touch panoramic sunroof that makes the cabin a bright, airy, and pleasant place to be. Otherwise, it's your standard Golf fare, but with a whole lot more room out back. The same two engines that power the standard Golf – the 1.8-liter turbocharged inline-four TSI, and 2.0-liter turbocharged TDI diesel – are also found under the hood of the SportWagen. Gasoline-powered models come with a five-speed manual or a traditional six-speed auto, while the TDI gets six-speed transmissions across the board – either as a row-your-own manual, or a dual-clutch DSG auto with steering wheel-mounted paddles.