2013-'14 Mercedes-Benz C300 4Matic To Get Lower Fuel-Economy Ratings, Says EPA | Edmunds

2013-'14 Mercedes-Benz C300 4Matic To Get Lower Fuel-Economy Ratings, Says EPA


Just the Facts:
  • The 2013-'14 Mercedes-Benz C300 4Matic sedans will get lower fuel-economy ratings, following an audit by federal regulators, the EPA said.
  • The affected C300 4Matic partial zero emission vehicle will have a new rating of 19 mpg in city driving and 28 mpg on the highway.
  • The affected C300 4Matic that can run on ethanol or gasoline will have a new rating of 19 mpg in city driving, while its highway mpg of 27 is unchanged.

WASHINGTON — The 2013-'14 Mercedes-Benz C300 4Matic sedans will get lower fuel-economy ratings, following an audit by federal regulators, the EPA said.

The affected C300 4Matic partial zero emission vehicle will have a new rating of 19 mpg in city driving and 28 mpg on the highway. Each rating dropped by 1 mpg.

The affected C300 4Matic that can run on ethanol or gasoline will have a new rating of 19 mpg in city driving, while its highway mpg of 27 is unchanged. The city rating reflects a drop of 1 mpg.

"Even though the adjustments are small, it is important that our oversight system is producing the correct results because even one mpg matters to consumers," said Christopher Grundler, director of EPA's Office of Transportation and Air Quality, in a statement.

The automaker's error is attributed to underestimating the impact of aerodynamic drag and tire rolling resistance known as "road-load."

EPA said it also tested several other Mercedes as part of this spot check and found their labeling was accurate.

Mercedes-Benz will not provide a reimbursement plan for owners, according to Donna Boland, a company spokeswoman.

"The difference here is very small," she wrote in response to an Edmunds query. "One mpg variance in fuel economy could be brought about by different driving styles, vehicle load, etc. Other manufacturers who have launched customer reimbursement programs have restated at least some of their labels by significantly more.

"Those other manufacturers had also actively marketed the subject vehicles on the basis of the claimed EPA fuel economy ratings, unlike Mercedes, which has not touted the EPA fuel economy rating in its marketing."

Boland said about 500 of the cars require a revised label.

A new-generation 2015 Mercedes-Benz C-Class debuted in August.

Edmunds says: Hyundai, Kia and Ford have also changed mpg ratings on several models after the EPA found errors in testing. This is part of a broader effort by federal regulators to give accurate information to consumers.

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