New cars are using a lot more fuel on the roads than in laboratory tests. Which has left people asking questions about the accuracy of car manufacturers’ claims.
The research was conducted by the Australian Automobile Association (AAA), who found that on average, fuel use was 25% higher than claimed on the government-mandated fuel consumption label displayed on all new cars. In some cases, they were 60% above what the label said.
The study examined 17 newly and commonly available cars in the past 10 months. And although the AAA did not name the manufacturers, they did say that the cars were selected across a number of different brands, vehicle types and fuel types.
On-road noxious gas emissions from five diesel cars were found to be over the legal limit, with one of these cars being over the limit by up to eight times.
Two petrol cars were also found to be significantly above the limits for carbon monoxide emissions.
Serious concerns about the trust of car manufacturers emissions claims had been raised after the Volkswagen scandal back in 2015. VW were caught installing software in cars that allowed it to game emissions tests in the United States.
The scandal was released after environmental groups detected discrepancies between real-world emissions tests and those recorded in laboratory tests.
The cars tested had all be driven at least 2,000km but no more than 85,000km, and were no older than 2014. Every car was tested twice, once from a cold start and the other from a warm start and were driven along the same route in Melbourne, Australia, which contained urban, extra urban and freeway driving.
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