About ten months ago, we reported on Daimler AG and Mercedes-Benz raising warning alarms about a newly approved refrigerant for automotive air conditioning applications, called R1234yf. The new coolant was approved for use in the European Union because it has a reduced negative effect as a greenhouse gas when compared with its precursor, R134a. However, Daimler and VW contended that the new coolant posed a serious risk in crash situations, where it could not only pose a primary fire risk, it might also emit poisonous hydrogen fluoride gas when ignited.

The EU claims that its testing has revealed R1234yf to be safe, and the refrigerant is now the only approved air conditioning coolant in the region.

Nevertheless, some Mercedes-Benz A-Class, B-Class and SL-Class cars, assembled later than June 12, were shipped to France for sale after being certified by German authorities. Rather than register the cars, as is typical, French authorities have apparently refused to approve the R134a-filled vehicles.

A Reuters report indicates that Daimler "has no explanation" for why the vehicle registration was stopped, while citing French authorities as acting because of the banned coolant. The article also points out that Daimler and Volkswagen are both hard at work on "carbon dioxide-based" AC systems, as a complete end-around to the problem.

I'm reporting this comment as:

Reported comments and users are reviewed by Autoblog staff 24 hours a day, seven days a week to determine whether they violate Community Guideline. Accounts are penalized for Community Guidelines violations and serious or repeated violations can lead to account termination.

    • 1 Second Ago
  • 2016 Mercedes-Benz Sprinter
    MSRP: $36,495 - $46,940
    2016 Mercedes-Benz E-Class
    MSRP: $52,650 - $104,300
    2016 Mercedes-Benz C-Class
    MSRP: $38,950 - $73,250
    2016 Mercedes-Benz GLE-Class
    MSRP: $51,100 - $65,100
    2016 Mercedes-Benz GL-Class
    MSRP: $64,550 - $91,300
    Share This Photo X