Cars from Dongfeng Honda, Dongfeng Peugeot and Great Wall have been found to contain excessive levels of formaldehyde and acetaldehyde, chemicals which could pose a health risk, consumer protection commissions said yesterday.
A total of 43 cars of 25 brands, bought by customers in 21 cities, were tested. Forty passed tests which targeted the concentration of eight common compounds.
A Dongfeng Honda Civic and a Dongfeng Peugeot 508 were found to have levels of acetaldehyde higher than the national maximum standard.
A Great Wall H6 was found to contain excess formaldehyde.
Manufacturers were ordered to fix the problem.
A second check on new vehicles of the same type that had failed the earlier tests showed all three brands passed.
The compounds tested for can evaporate at room temperature, entering the air. Excessive amounts can lead to respiratory problems and allergic reactions.
Dongfeng Peugeot spokesman Li Nanhong stressed that the company's cars had passed the second checks.
An official with Dongfeng Honda said there had been a "misunderstanding."
Great Wall said the car in the first test may have been refitted or objects containing the chemical had been stored in the vehicle. Two of its vehicles chosen at random for the second test both passed.