The National Highway Traffic Safety Administration submitted a safety recall report for the iconic carmaker’s Aventador and Veneno models on Feb. 3. The notice suggests Aventadors filled with too much gas could exhaust the system “in certain driving conditions.” And if liquid fuel reaches the exhaust system, it could cause a fire.

Car owners were notified of the recall Tuesday, Lamborghini told CNN—and is aware of seven cases of fires. The company added that it’s not aware of any injuries linked to the recall.

Pricing for some of the recalled Aventadors starts at around $400,000, while the rare Veneno cost an upwards of $4 million, CNN reports.