Emissions Testing Out Of The Frying Pan Into The Fire
Wednesday, 25. July 2018
For most people WLTP probably doesn’t mean a lot but for anyone in the motor industry it’s been an absolute pain over the last 12 months. It stands for the Worldwide harmonised Light vehicle Test Procedure. It’s an attempt to get all vehicles properly tested, following the VW emissions debacle, making it more difficult to fiddle the results.
New model cars for this year had to be approved using the new testing criteria. The tests were still carried out in the rolling road laboratories but instead of self-testing examiners were in attendance to oversee the testing and the tests were more involved and took much longer.
A few failed but when the new models were designed they took the changes into account so most successfully got the approval they were looking for at the first time of testing, keeping them in the same emissions brackets. However, the next phase was to test existing models which caused major challenges as they were found to be way out.
An even bigger challenge was not so much carrying out modifications on the production lines in order to make new cars (but old models) compliant and back to their previous readings, it was the time it was taking to wait for a re-test. The authorities hadn’t allowed for the massive increase in test facility requirements for not only cars that had previously been tested but the re-test requirements.
Cars that were tested under the old regime must be sold by the end of August so we’ve seen some extra discounts but we’ve also seen orders and production lines shut down whilst manufacturers have carried out modifications to their engines and exhaust systems in order to make their latest production compliant.
In an effort to reduce the burden the DfT has allowed 10% of the manufacturer sales or 2,000 vehicles that haven’t made it through the new emissions tests to be registered after 1st September,
However, this takes us to the next challenge. The Real Driving Emissions Tests (RDE). This compliments the WLTP tests and takes us a little further towards accurate emissions tests. The RDE tests require that standard cars be fitted with test equipment for testing on real roads in real conditions.
They check amongst other things low and high altitudes, year-round temperatures, additional vehicle payloads, up and downhill driving, urban, rural and motorway road driving. So it looks like we’ll be in for even more disruption as we move to the next ridiculous level.
The fact is that everyone drives differently which provides widely differing emissions and performance results. And that’s all before we Brexit. More pain for the industry and customers. By Graham Hill
