toyota-carbon-monoxide-r

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Euro 5 & 6 diesel vehicles

Euro 5 & 6 petrol vehicles

Euro 5 & 6 hybrid vehicles

The EQUA Carbon Monoxide Index

What is the issue?

Potentially fatal for humans as well as damaging to the environment, carbon monoxide is generally considered a problem primarily confined to petrol vehicles. Regulations to control CO emissions distinguish between the fuel types, with petrol vehicles legally allowed to emit twice as much as diesel vehicles. The EQUA CO Index reveals whether the statutory requirements are being met in real-world operation.

How the EQUA CO Index helps

The EQUA CO Index awards a universal rating regardless of fuel type to allow comparisons between vehicles. Petrol vehicles tested by Emissions Analytics on the road need to achieve a C-rating or above to be compliant with the 1.0g/km regulated limit. Diesel vehicles have to meet the more stringent 0.5g/km limit which is identified as an A-rating or above on the EQUA CO Index.

The EQUA Index is the definitive guide to vehicle emissions on the road, powered by Emissions Analytics, the independent testing and data analysis experts.

Use the table below to identify which cars are legally compliant in real-world operation from the extremely clean A++ rated models to those emitting many times more than the law allows.

Ratings Explained

Rating Lower bound1 Lower bound2
A++ 0.00 0.125 Euro 4-6 diesel
A+ 0.125 0.25 Euro 4-6 diesel
A 0.25 0.50 Euro 4-6 diesel
B 0.50 0.64 Euro 3 diesel
C 0.64 1.00 Euro 2 diesel, Euro 4-6 petrol 60% more than current petrol limit, ~x3 current
D 1.00 1.60 Diesel limit
E 1.60 2.20 Euro 2 petrol
F 2.20 2.72 Euro 1 diesel, Euro 1 petrol
G 2.72 5.44 Up to double Euro 1
H 5.44  – More than double Euro 1
Units: g/km, 1 exclusive, 2 inclusive

ManufacturerModelFuel
Type
Model
Year
Engine
Size litre
Power
bhp
Driven
Wheels
TransmissionRegulatory
Stage
EQUA CO
Rating
wdt_IDManufacturerModelFuel
Type
Model
Year
Engine
Size litre
Power
bhp
Driven
Wheels
TransmissionRegulatory
Stage
EQUA CO
Rating
1 Abarth 500c Petrol 2013 1.4 140 2 Manual Euro 5 A++
2 Alfa Romeo Giulietta Diesel 2012 2.0 140 2 Manual Euro 5 A+
3 Alfa Romeo Giulietta Petrol 2013 1.4 170 2 Automatic Euro 5 E
4 Alfa Romeo Mito Petrol 2014 0.9 105 2 Manual Euro 6 A
5 Alfa Romeo Mito Petrol 2014 1.4 140 2 Automatic Euro 5 A+
6 Aston Martin Vantage Petrol 2014 4.7 430 2 Manual Euro 5 A
7 Audi A4 Diesel 2012 2.0 163 2 Manual Euro 5 A++
8 Audi Q3 Diesel 2012 2.0 140 2 Manual Euro 5 A+
9 Audi A4 Diesel 2012 2.0 136 2 Manual Euro 5 A+
10 Audi Q5 Diesel 2012 2.0 143 4 Manual Euro 5 A+


EQUA INDEX