Vehicle Questions and Answers
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The 2018 Ford Fiesta is recommended to use 87 octane regular unleaded gasoline or higher by the manufacturer. Contrary to popular belief, using higher octane fuel does not provide any tangible benefits for your engine or vehicle. Claims that it improves gas mileage or cleans fuel injectors and pumps have been debunked. If you experience hesitation while accelerating or difficulty starting your vehicle, you can buy fuel pump/injector cleaner from an auto shop to remove buildup that may be affecting proper fuel flow.
The Fiesta, Ford's compact hatchback, comes in various trims like S, ST, SE, and Titanium, all powered by regular unleaded gasoline. Similarly, the 2018 Ford Fiesta sedans - including the SE, S, and Titanium models - also run on regular unleaded gasoline.