12 Jul 19

Green NCAP unveils the real emissions of cars

Green NCAP, the consumer programme for greener cars, has launched its second round of test results. Let’s have a look at how ‘green’ the following models are. 

Mercedes-Benz C220d 4MATIC, diesel  ★★★

It may be a diesel car but the Mercedes C220d still scored maximum points on the Clean Air Index, showing once more that diesel cars aren’t necessarily the most polluting. Yet, it scored just 5.3 out of 10 on the energy efficiency index, bringing its total score to 3 stars.  

Renault Scenic dCi 150, diesel  ★★★

The Renault Scenic diesel also received a high score on the clean air index, i.e. 8.6/10. However, the energy efficiency index brings down its total score to 3 stars, with no more than a 5.9/10 rating. 

Audi A4 Avant g-tron, CNG  ★★★

The Audi A4 Avant g-tron was the first and only CNG car assessed by Green NCAP. While the car is compliant with the Euro 6b emissions standards, it should be soon updated to the new Euro 6d-temp requirements and Green NCAP promises to repeat the test as soon as the new model is out there. 

Yet, the current test results gave the car a 3. Remarkably, Green NCAP did the test both on a fully operating CNG mode and on its spare petrol tank. Not surprisingly the performance on petrol was significantly worse. In total, while the clean air index scores 8.7 to 10, the energy efficiency was a mere 4.7/10. 

Opel/Vauxhall Corsa, 1l petrol ★★★★

The Corsa scored high for a petrol-engined vehicle, which it deserved because of its control of pollutant emissions. Therefore it received a 9 on the Clean Air Index, yet it only scored a 6 on the energy efficiency index. 

Nissan Leaf, pure electric ★★★★★

Green NCAP tested the second-generation Leaf, which received the highest score of 5 stars. Based on the tank-to-wheel standards the EVs offer the cleanest, most efficient motoring according to Green NCAP. Hence, the Nissan Leaf received a 10/10 on its clean air index and a 8.5 to 10 on its energy efficiency. 

The Green NCAP organisations was launched last year in order to provide independent evaluations of car emissions standards, in the aftermath of dieselgate and other emission standard schandals. 

The publication of the above-mentioned 5 models is the second round of results, after Green NCAP had already reviewed models such as the VW Golf, Ford Fiesta, Fiat Panda, Volvo XC40, Subaru Outback, Audi A7 Sportback, Mercedes Benz A-Class, BMW X1, VW Up!, Hyundai Ioniq, and BMW i3. 

Authored by: Fien Van den steen