VW/Audi
This is going to hurt the bottom line a bit! So wonder how the fix will affect their fuel mileage and used car prices? LINK The Environmental Protection Agency and California issued a notice of v...
Forum Discussion
according to this
http://news.yahoo.com/illegal-volkswagen-diesel-emission-systems-may-require-two-223240284--finance.html
Beginning in 2012, Volkswagen offered the same 2.0 TDI engines with a more sophisticated and expensive emissions control system called Selective Catalytic Reduction. These systems, which debuted on VW's largest car, the Passat, injected a liquid urea solution into the exhaust to break down the nitrogen oxides.
These systems also had software that turned them off during normal driving, the company has admitted. The consequences of running the systems all the time will be different for consumers than the older, NOx traps.
Ideally, the urea solution used to control smog-forming gases is supposed to be replaced every 10,000 miles, typically by a dealer, but VW encountered potential problems.
On newer models with the SCR system, Trahan said there were concerns within the company about the urea consumption being so great that it would require separate "fill-ups" every 5,000 miles, rather than the desired 10,000-mile intervals that are typical between engine oil changes.
A software update on the newer diesel models equipped with SCR devices could lead to "reduced vehicle performance and fuel economy and increased urea use," said analyst Kevin Riddell of LMC Automotive. The new software "also will have an impact on resale value and potential marketability,"
http://news.yahoo.com/illegal-volkswagen-diesel-emission-systems-may-require-two-223240284--finance.html
Beginning in 2012, Volkswagen offered the same 2.0 TDI engines with a more sophisticated and expensive emissions control system called Selective Catalytic Reduction. These systems, which debuted on VW's largest car, the Passat, injected a liquid urea solution into the exhaust to break down the nitrogen oxides.
These systems also had software that turned them off during normal driving, the company has admitted. The consequences of running the systems all the time will be different for consumers than the older, NOx traps.
Ideally, the urea solution used to control smog-forming gases is supposed to be replaced every 10,000 miles, typically by a dealer, but VW encountered potential problems.
On newer models with the SCR system, Trahan said there were concerns within the company about the urea consumption being so great that it would require separate "fill-ups" every 5,000 miles, rather than the desired 10,000-mile intervals that are typical between engine oil changes.
A software update on the newer diesel models equipped with SCR devices could lead to "reduced vehicle performance and fuel economy and increased urea use," said analyst Kevin Riddell of LMC Automotive. The new software "also will have an impact on resale value and potential marketability,"
