Acerta: ‘leasing car CO2 emissions 20% down in one year’

According to a study by HR service provider Acerta, the average CO2 emissions from leasing cars have fallen by almost 20% in one year and 40% in ten years. The study analyzed a database listing more than 270,000 workers and employees in Belgium.

Tax deductibility for fossil fuel cars purchased between July 1, 2023, and December 31, 2025, gradually decreases and will disappear definitively in 2028. Only electric company cars are still 100% deductible until 2026.

More e-cars, less emissions

This strengthening of the rules is beneficial since it has contributed to multiplying the number of electric cars and thus significantly reducing CO2 emissions. “Last year, average company car emissions fell from 98.75 g/km to 80.57 g/km, a drop of 18.4%,” the Acerta researchers explain.

“In 2024, electric cars represent 16.98% of the company car fleet. Their average CO2 emissions now stand at 22.41 g/km, compared to an average of 117.15 g/km for fossil fuel company cars.”

Higher average price

However, the massive switch from fossil to electric cars is sharply raising the average price of company cars for employers. The total cost price has increased by 25 to 30 percent in just a few years.

The average catalog value has increased, and electric cars are more expensive than fuel-powered vehicles. On the other hand, an electric car and the installation of a charging station are 100% tax deductible.

Too expensive for private individuals

Another explanation for the increased cost of leasing cars is that leasing companies have great difficulty selling expired e-cars on the second-hand market. Such cars are still too expensive for many private individuals.

As a result, leasing companies are more careful in estimating the residual value of the leased cars, which inevitably drives up the leasing rates for electric company cars.


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