European automotive supplier association, CLEPA says it is worried about the harm caused to the industry by continuing fallout from Volkswagen's emissions scandal.

Many CLEPA members are involved in developing a range of technologies to reduce pollutant emissions from vehicles – with the supplier body insisting they can perform satisfactorily under real world driving conditions – be it for gasoline or diesel cars.

“Diesel remains one of the key pillars in the portfolio of low CO2 technologies for delivering clean and affordable transport for future generations”, said CLEPA CEO, Paul Schockmel.

“European automotive suppliers are committed to keep pushing the technical boundaries in order to combine customer benefits of diesel in terms of fuel economy and low CO2 with continuously reduced emissions. CLEPA members are firmly committed to stay in the lead by further investing in safety, environmental protection and societal responsibility."

CLEPA notes “the problem with real world emissions is neither linked to specific powertrain technologies nor specific emissions control technologies,” but is related to the integration and application of components in specific vehicle types.

It adds the correct calibration and integration of components into vehicle systems lies in the responsibility of the vehicle manufacturer, noting it supports the introduction of a real driving emissions (RDE) test to complement current regulation.

“European Automotive suppliers strongly recommend a two-step approach starting in September, 2017 for new light duty vehicle types including reasonable Conformity Factors (CF) with respect to technology available now,” said a CLEPA statement.

“In order to avoid severe repercussion for the European industry, highly ambitious CF must be very carefully evaluated considering many current models will not be able to meet them. For all new vehicles, CLEPA supports a reasonable transition period following the RDE introduction for new types.

“CLEPA members are confident Euro 6 plus the RDE test will deliver the emission reductions politics and society seek – for both diesel and gasoline powertrains and under real world driving conditions. This is also true, particularly for NOx from diesel engines.

“Diesel remains a key technology for achieving future CO2 targets: Over the last 15 years, nitrogen oxides (NOx) limits for diesel car engines have been reduced by 84%, and particulates (PM) by 90%. Diesel cars also have 15% lower CO2 emissions per kilometre than equivalent gasoline-powered vehicles.”