Laboratory Tests | NMHC | NOX | NH3 | CO | PN | |
---|---|---|---|---|---|---|
6.310 | Cold Test | |||||
7.110 | Warm Test | |||||
0.010 | Cold Ambient test | |||||
0.010 | Highway | |||||
Road test | ||||||
5.410 | On-Road Drive | |||||
5.38 | On-Road Heavy Load | |||||
3.35 | On-Road Light Load | |||||
3.75 | On-Road Short Trip | |||||
0.02 | Congestion | |||||
Robustness |
Laboratory Tests | Energy | |||
---|---|---|---|---|
7.110 | Cold Test | |||
7.710 | Warm Test | |||
5.310 | Cold Ambient test | |||
5.110 | Highway | |||
Consumption | Driving Range | |||
Average | 5.1l100 km | 1,049km | ||
Worst-Case | 6.1l100 km | 839km |
Greenhouse Gases | CO2 | N2O | CH4 | |
---|---|---|---|---|
2.27 | Cold Test | |||
2.47 | Warm Test | |||
1.97 | Cold Ambient test | |||
2.07 | Highway |
Our verdict
The original A-Class came to the market in 1997 and, now in its fourth generation, remains part of Mercedes-Benz's line-up. The car tested by Green NCAP is the 180d, with Daimler's 1.5 litre, turbocharged four cylinder diesel engine. Energy efficiency is a strong point for the car, with low fuel consumption for a car of its weight. For pollutant emissions, the car has selective catalyst reduction, a three-way catalyst and a diesel particulate filter. On the whole, these work well and emissions of pollutants and greenhouse gases are well controlled. Oxides of Nitrogen are the only weak point: in the Clean Air index, NOx is elevated in the more challenging tests and emissions of N2O, a powerful greenhouse gas, reduce the score in that part of the assessment. The indexes in these two areas of assessment reduce the average and result in an overall 2½ star rating.