Once you perceive a gas smell from your car, taking the measures will reduce the repair bills and save you time and your life. 12 sept. 2023 · Here are the main key takeaways in case you’re in a hurry:Is it dangerous?Potentially.Most likely locations:fuel filter, seals, fuel lines, or injectors.Average repair cost:$500 to $1,000 (apart from the fuel filter, which should be around $70 to $100).You can identifygasleaking from the bottom of t.