An Astana resident, Zhanar Akhmetzhanova, plans to sue a Qazaq Oil filling station after her Hyundai Santa Fe crossover began losing power and its engine made an unusual noise following a fill-up with AI-95 gasoline. She described the incident on the social network Threads, according to infohub.kz.
The vehicle was purchased in May 2026. At the time the fault appeared, its mileage stood at about 13,500 km.
According to the woman, on September 14 she filled up with AI-95 gasoline at one of Qazaq Oil's filling stations on the way out of the capital. Roughly 77 km later, the car began losing power and the engine started making an unusual noise.
At a Hyundai service center, poor-quality fuel was named among the possible causes, after which the motorist turned to Qazaq Oil. Representatives of the chain arranged for a fuel sample to be taken.
At the crossover owner's request, the filling station provided the results of a laboratory test of a sample from the tank. The document states that, on the indicators checked, the sample meets the stated requirements. However, as the woman notes, the test did not cover all possible characteristics of the fuel.
Qazaq Oil also gave her a sample from the same tank for a possible independent examination. According to the motorist, such a test could cost about 300,000 tenge. Zhanar believes that, to determine the cause of the fault, it would be more appropriate to examine a sample taken directly from the pump where the car was refueled.
After the fault appeared, the woman turned to an official Hyundai service center under warranty. A computer diagnostic found no errors, but the loss-of-power problem later recurred.
On September 21, specialists additionally checked the fuel system and injectors. According to the owner, the dealer's work order cited the use of poor-quality fuel as the cause. The service drained the gasoline, flushed the system, cleaned the injectors, replaced the spark plugs, and also flushed and recalibrated the throttle body.
The work cost 159,400 tenge. The woman spent another 15,200 tenge on a taxi and a metal jerrycan. Her total unexpected expenses came to almost 174,600 tenge.
Zhanar decided to seek an official investigation into the situation. She said she had sent appeals to the Department of Trade and Consumer Protection, the Astana department of the Committee for Technical Regulation and Metrology under the Ministry of Trade and Integration, and other government agencies. A pre-trial claim was also sent to the director of the Astana and Pavlodar region branch of PetroRetail LLP.
At the same time, the woman plans to keep driving the car and to see whether the problem disappears after the repairs and the fuel replacement.
Earlier, Kursiv Auto reported that Astana drivers had complained en masse on social media about the quality of gasoline.