2008 Audi A4 Base Sedan 4-door 2.0l S Line on 2040-cars

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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.

Audi introduces frugal, 43-mpg Q7 Ultra in Europe

As Audi's largest model, you wouldn't expect the Q7 (standard 2017 model pictured above) to get very good fuel economy. But the new flagship crossover is a lot lighter than its predecessor. And now the German automaker is rolling out an even more efficient version. In Europe, at any rate. Bearing the designation that distinguishes the most fuel-efficient models that Audi offers, the new Audi Q7 Ultra 3.0 TDI Quattro packs a more frugal version of the 3.0-liter V6 turbo diesel. In Ultra spec, it produces 218 horsepower instead of 272, and 369 pound-feet of torque instead of 443. In exchange, it returns better fuel economy – now quoted at the equivalent of 42.8 miles per gallon (compared to 41.3 for the more potent version). That's not half bad for a crossover this large, even if it is on the European efficiency test, which returns higher numbers than what we're used to in the US. Of course, burning less fuel comes at a bit of a performance penalty: instead of 6.3 seconds, it now takes 7.1 seconds to reach 62 miles per hour from a standstill. Top speed is quoted at just over 134 miles per hour, down from 145. Of course, the E-Tron hybrid will be the most efficient model in the Q7 range, returning the equivalent of over 117 miles per gallon while reaching 62 in six seconds flat. That is, when it starts reaching dealers next spring. The kicker here is that while the hybrid is likely to emerge as the most expensive model in the range, the Ultra is the least. Its base price in Germany comes in at 58,000 euros, compared to 61,890 for the more potent TDI. Combine that with the fuel savings, and the Q7 Ultra is looking like the frugal choice indeed. New Audi Q7 as a highly efficient diesel - The Audi Q7 ultra 3.0 TDI quattro now available for order - Combined fuel consumption is 5.5 liters of fuel per 100 km - Base price is 58,000 euros in Germany An exceptionally efficient diesel version of the new Audi Q7 is launching on the market, which customers can now order: the Audi Q7 ultra 3.0 TDI quattro*. This engine not only reduces fuel consumption to 5.5 liters diesel per 100 km (42.8 US mpg); it also reduces the entry-level price for the Q7 model series to 58,000 euros. Audi will be delivering cars to dealers in Europe starting in September. The efficiency is ground-breaking: The combined fuel consumption of the 3.0 TDI with 160 kW (218 hp) is just 5.5 liters of fuel per 100 km (42.8 US mpg).

2014 Audi SQ5 ditches diesel, still packs a punch

Over in Europe-land, the Audi SQ5 is a diesel-powered monster capable of sending a whopping 479 pound-feet of torque to its wheels. Naturally, this beast isn't coming to the States, but that doesn't mean we're missing out on the whole SQ5 experience altogether. At the Detroit Auto Show this week, Audi is debuting a new gasoline-powered version of the hot crossover, and while it's not quite the oil-burning dreamboat we've lusted after from afar, we certainly wouldn't kick it out of bed.
Instead of a diesel, we get a boosted version of Audi's supercharged 3.0-liter V6, good for 354 horsepower and 346 pound-feet of torque. Running through an eight-speed automatic transmission, the SQ5 will reportedly be able to fire off 0-60 times in the low-five-second range and will top out at an electronically limited 155 miles per hour. Suspension upgrades are on hand to improve road-going prowess, but also lower the Q5's stance a bit, too.
Because this is an S model, there are plenty of visual upgrades on hand, including a more aggressive front fascia, 20-inch wheels and some pretty new colors including Estoril Blue and Panther Black. Interior upgrades like Alcantara trim and aluminum brightwork add to some sportiness from the cockpit view, as well.