New data proves that modern diesel cars emit low pollutant emissions on the road
New data released by the European Automobile
Manufacturers’ Association (ACEA) provides evidence that the latest-generation
diesel cars emit low pollutant emissions on the road.
The data was measured in real-driving conditions by the
drivers of the various national type approval authorities.
Some 270 new types of diesel cars type-approved against
the latest Euro 6d-TEMP standard were introduced on the European market over
the past year. The new data shows that all of the diesel cars performed well
below the nitrogen oxide (NOx) threshold of the real driving emissions (RDE)
test, which has applied to all new car types since September 2017.
Furthermore, already today most of those vehicles showed
results that were below the stricter NOx threshold that will be mandatory from
January 2020, according to ACEA.
RDE measures key pollutants, such as NOx and particles,
emitted by cars while driven on public roads over a wide range of conditions.
RDE therefore ensures that pollutant emission levels measured during the
laboratory test (WLTP) are confirmed on the road, and that the legal thresholds
are not exceeded during day-to-day driving.
Each of the 270 RDE-compliant diesel vehicle types
represents a whole ‘family’ of similar cars of differing variants, so a multitude
of low-emitting diesel cars were now available on the market, said ACEA. The
German automobile club, ADAC, estimates that there are more than 1,200
different RDE-compliant cars available today and availability was increasing
Erik Jonnaert, ACEA secretary general, said: “These new
findings prove that modern diesel cars, supported by fleet renewal policies and
combined with alternative powertrains, will play a strong role in helping
cities move towards compliance with air quality targets. In parallel, diesel
vehicles will continue to remain important for reducing CO2 emissions in the
short and medium term, even though all manufacturers are expanding their offer
of electrically-chargeable cars.
“Auto makers have made major investments to quickly
deliver these massive reductions in NOx emissions. It is important that we stop
demonising diesel technology as a whole. Instead, we need to differentiate
between the old diesel fleet and the latest generation of vehicles.”
The findings were, said ACEA, supported by third parties.
ADAC recently performed independent on-road testing of RDE-compliant diesel
vehicles and found that modern diesels emitted 85% less NOx on average than
Euro5 cars, concluding that the latest diesels were “very clean”. The organisation’s
additional testing demonstrated that the best-performing RDE-compliant Euro6
diesels emitted as much as 95-99% less NOx than Euro5 vehicles.