BBC VW VS Ford focus
Smaller Ford diesel Vs VW Passat
We asked independent testers from Emissions Analytics to put a couple of diesel-powered cars through their paces.
We chose a two litre Volkswagen, because it is the company at the centre of the scandal, and a 1.5 litre Ford Focus, which according to DVLA figures is the second most popular diesel car on Britain's roads today (after the VW Golf).
We are not suggesting that either of these cars is cheating in any way.
The test recreates the way people actually drive around town - often at low speeds and in traffic, but with the odd fast stretch.
Engines have to meet European emissions regulations based on when they were built. The VW Passat that was tested was a slightly older model, so it had to meet the less stringent Euro 5 requirements. The newer Ford Focus had to meet the tougher Euro 6 standards.
In the tests conducted for the BBC, the VW emitted 0.664g of NOx per km, which is a touch under four times the regulated limit of 0.18g under the Euro 5 rules.
It managed 41.7 miles per gallon in urban testing, which is close to its published urban fuel efficiency of 44.8 mpg.
The Ford emitted 0.422g of NOx per km, which is more than five times the regulated limit of 0.08g under the Euro 6 rules.
It managed 47 miles per gallon in urban testing - well below its published urban fuel efficiency of 65.7 mpg.
Try this link
Putting car emissions to the test - BBC News
MY13 Passat 130TDI Sedan. Autumn Brown Metalic, Desert Beige seats. Sat nav, Rev camera, Dynaudio, 12way adj seats. No ACC Previous Golf 118 TSI with ACC given to my son
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