Everybody spent years slagging off the original EU fuel economy testing as it was patch over the non CO2 testing protocol
OEM's wated one worldwide fuel economy test regime (WLTP) to sensibly save time and money.
For the WLTP engineers tried very hard to make a single test requirements across all nations.
The EU then used the WLPT cycle for CO2 reduction legislation.
Now the EU auditors have concluded that the EU implementation of WLTP is in old fashioned words " a crock of ****"
Now i hadn’t realised that the EU required on board fuel economy tracking on all new cars but that is apparently the source of the discovered discrepancy.
https://www.autocar....ar-fuel-economy
I have this feeling the engineers are going to be blamed again!
The EU auditor’s suggestion to follow the UK percent of sales rules for pure EV’s is fine but that won't really start to bite until 2028 and beyond when EV’s ' must be 52% of sales.