2002 Audi Tt Quattro Base Coupe 2-door 1.8l on 2040-cars

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Refreshed A1 packs Audi's first three-cylinder gas engine [w/video]

Back in 2010, Audi debuted the diminutive A1, and it's sold over half a million of them since. Now, more than four years later, the German automaker has given its smallest and most accessible model a facelift and some updated equipment.
The latest version of the A1 benefits from a range of updates, including a sharpened take on the company's familiar styling with a reshaped single-frame grille, new bumpers front and rear as well as new wheel and color choices. But the biggest news is the introduction of Audi's first three-cylinder gasoline engine.
The turbocharged, direct-injected 1.0-liter three-pot churns out just 94 horsepower, but that's still six more than the previous base 1.2-liter four offered, all the while returning better fuel economy and emissions figures. Of course, that turbo three is not the only engine on offer, joining the 1.4-liter turbo four in 123- and 148-hp states of tune and the 113-hp 1.6-liter TDI. And of course there's still the 228-hp S1 performance model. Depending on specification, the engines are mated to a five- or six-speed manual, but can all be optioned with a seven-speed dual-clutch transmission as well.

2015 Audi TT and TTS fully revealed

The base 2.0-liter TDI four-cylinder with standard stop-start churns out 184 hp, 280 lb-ft of torque, and returns a hugely impressive 56 mpg.
Ladies and gents, here's your new Audi TT. The third-generation of Audi's two-seat sports car made its debut under the lights at Volkswagen's all-encompassing Group Night.

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.