Study: Some car models consuming around 50% more fuel than official results
If you read the full report, the automaker with by far the largest gap between its claimed improvements in fuel economy and its actual on-the-road performance is General Motors. Much worse than VW and Mercedes (who also did very poorly), by this measure.A reckoning is coming.source: see page 13, herehttp://www.transportenvironment.org/sites/te/files/publicati...