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Which car models have been found to consume 20% more fuel than the stated amount on Australian roads?
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Which car models have been found to consume 20% more fuel than the stated amount on Australian roads?

A recent study revealed that vehicles driven in Australia use approximately 20% more gasoline than what manufacturers have stated. This finding was based on a program that measures real-world fuel efficiency through laboratory calculations.

The latest round of compliance checks by the Australian Automobile Association (AAA), which was funded by the federal government, revealed that four out of the 13 vehicles tested exceeded the regulatory limits for oxides of nitrogen or carbon monoxide.

In the assessment of various types of vehicles such as passenger cars, small and medium SUVs, and larger people movers, it was discovered that 7 out of 13 vehicles had fuel consumption rates that were within 5% of what the manufacturers had advertised.

Yet, during road tests, five cars showed a discrepancy of 9-20% from their lab results. On the other hand, one car outperformed the manufacturer’s claims by 7%.

The experiment involved calculating the average outcomes of driving tests on different types of roads (urban, rural, and motorways) at different speeds.

2 emissions are measured accurately”

Testing took place in the Geelong region of Victoria in December 2023, under strict conditions set by the AAA. These conditions were in accordance with European Union laws that guarantee precise measurement of fuel consumption and CO2 emissions.2

The outcomes are consistent and reduce the impact of human variables like driving techniques and fluctuating traffic patterns.

The second round of testing conducted by the automobile association revealed the biggest violators to be:

BMW X3

The SUV’s fuel consumption in real-world testing was significantly higher than the manufacturer’s reported results. The AAA discovered that the 2021 model required 8.9 litres of fuel to travel 100km, which is a 20% increase compared to the 7.4 litres per 100km reported from lab tests.

MG3

During testing of the 2023 model of the compact car, it was discovered that the MG3 consumed 19% more fuel than its required lab result of 6.7 liters per 100 kilometers.

Audi Q5

The Audi Q5 SUV was discovered to use 17% more gasoline than advertised, achieving a real-world fuel efficiency of 5.6 liters per 100km on the 2022 model, in contrast to the laboratory test result of 4.8 liters.

Hybrid Toyota Yaris Cross

According to tests of the 2021 model, the Toyota Yaris Cross Hybrid consumed 12% more gasoline than its stated efficiency of 3.8 liters per 100 kilometers.

On the other hand, certain vehicles exceeded the manufacturer’s stated performance.

The Kia Carnival was tested and the results showed that its 2023 model uses 7% less fuel on the road compared to the lab results. The AAA states that the real-world fuel efficiency is 6 litres per 100km.

The pollution levels emitted by vehicles were examined as well. Out of the 13 vehicles, four showed pollutant readings that went beyond the limits set by Australian regulations for laboratory tests.

The AAA reported that three vehicles, the Kia Carnival, the Hyundai Staria, and the Kia Sportage, exceeded the limits for oxides of nitrogen. Additionally, the MG3’s on-road emissions of carbon monoxide were 85% higher than the regulated limit for lab tests.

Michael Bradley, the managing director of AAA, stated that the testing program in real-world conditions would increase transparency for consumers and decrease demand for models that do not live up to their promises.

According to Bradley, when evaluating cars, one cannot automatically assume that good results in laboratory tests will result in cost savings in real-life situations.

This knowledge has the potential to save a new car purchaser hundreds of dollars annually and also improve the overall state of our light vehicle population.

In response to a scandal involving Volkswagen in 2015, the Australian government implemented a testing program to ensure accuracy in emissions claims made by manufacturers. This scandal revealed that Volkswagen had intentionally misled consumers who may have purchased their vehicles based on false claims of lower emissions.

BMW, MG, Audi, and Toyota were reached out to for a statement.

During initial real-world trials, it was discovered that fuel consumption rates were as much as 13% higher than those determined in lab tests.

Source: theguardian.com