Top 10: Cars that fall shortest of their claimed MPG

While it has become the accepted norm that a car will never match its claimed MPG figure, there are some cars that fall way short of what the manufacturer claims. The gap between the official figures and the economy people are actually seeing has widened over the past years.

These then, are the cars currently on sale that fall shortest of their claimed MPG figure. As Real MPG is a live database, these figures will change over time. We have used models that have at least 50 Real MPG submissions.

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Mercedes-Benz C 350 e - 46.3mpg = 38% of its claimed MPG

The headline figure here looks pretty awful, with the plug-in hybrid version of the C-Class getting nowhere near its claimed economy. But the C 350 e is a victim - if you can call it that - of the woefully inadequate NEDC test. A test that only covers 11 miles and is carried out in a laboratory. Due to the fact it's a plug-in - and running for electricity for the majority of that test - its official figure is 122.8mpg, hence why it falls so short.

See Real MPG for the Mercedes-Benz C-Class

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