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EQUA Euro 6 Diesel

View the top Euro 6 petrol and hybrids currently on sale
EQUA Euro 6 Petrol and Hybrids

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The EQUA Air Quality Index

What is the issue?

The EQUA Air Quality Index is the independent authority on how car emissions affect air quality. Poor air quality is a serious issue in many locations, contributing to some health problems. All vehicles running on diesel or petrol/gasoline emit air polluting nitrogen oxides (NOx), but the amount varies significantly from car to car.

Official figures do not allow an easy, clear comparison to be made between different cars in real on-road driving.

Without the right data, it is impossible to make an informed decision on the best car to buy. While diesels typically have the best fuel consumption, are the emissions of pollutants just too high to justify the purchase?

The Volkswagen emissions scandal has made car pollutant emissions a hot topic, but it has left confusion. Are all diesels dirty? Are all Volkswagen’s well over the regulated limits?

How the EQUA Aq Index helps

The EQUA Index seeks to sort the good from the bad in a simple, clear way.

The EQUA Air Quality Index clearly identifies vehicles emitting the lowest quantities of nitrogen oxides (NOx) on a scale from A (best) to H (worst).

A comprehensive list of all ratings issued so far can be accessed below. These are free for download, distribution and publication in the format provided.

Ratings Explained

Rating Lower bound* Upper bound* External reference point
A 0.00 0.08 Meets Euro 6 limit for diesels, meets Euro 4 limit for petrols
B 0.08 0.12 Meets 1.5 Conformity Factor under Euro 6 Real Driving Emissions regulation
C 0.12 0.18 Meets Euro 5 limit for diesels (and similar to 2.1 Conformity Factor under Euro 6 Real Driving Emissions regulation)
D 0.18 0.25 Meets Euro 4 limit for diesels
E 0.25 0.50 Meets Euro 3 limit for diesels
F 0.50 0.75 No comparable Euro standard: roughly equal to 6-8 times Euro 6 limit
G 0.75 1.00 No comparable Euro standard: roughly equal to 8-12 times Euro 6 limit
H 1.00 None No comparable Euro standard: roughly equal to 12+ times Euro 6 limit
* Units: g/km, exclusive

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1 1.0 Audi A1 Petrol 2015 1.4 123 2 Manual Euro 6 A PDF JPG
2 2.0 Audi A3 Petrol 2015 1.4 148 2 Automatic Euro 6 A PDF JPG
3 3.0 Audi A4 Diesel 2016 2.0 148 2 Manual Euro 6 C PDF JPG
4 4.0 Audi A4 Petrol 2016 2.0 187 2 Automatic Euro 6 A PDF JPG
5 5.0 Audi A5 Diesel 2014 2.0 161 2 Manual Euro 6 A PDF JPG
6 6.0 Audi A6 Diesel 2014 2.0 187 2 Automatic Euro 6 C PDF JPG
7 7.0 Audi RS3 Petrol 2016 2.5 362 4 Automatic Euro 6 A PDF JPG
8 8.0 BMW 1 Series Diesel 2015 1.5 114 2 Manual Euro 6 D PDF JPG
9 9.0 BMW 1 Series Petrol 2015 1.5 134 2 Manual Euro 6 A PDF JPG
10 10.0 BMW 4 Series Diesel 2015 2.0 181 2 Automatic Euro 6 E PDF JPG


EQUA INDEX