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The 2014 Nissan Maxima runs on unleaded premium gasoline, recommended with an octane rating of 91 or higher by Nissan. While sticking with a rating over 91 is advised, some users have found good performance using gas rated at 87 or 89 octane. Opting for higher-rated gas improves engine efficiency, longevity, and overall performance. Using higher-rated fuel can enhance the engine's longevity by running smoother. Although Nissan suggests premium fuel, the car still functions effectively with regular unleaded gas. Users have noticed improved mileage when using premium fuel.
The 2014 Nissan Maxima is designed to run on premium 91 octane unleaded gasoline. While it is possible to use 87 or 89 octane gas in the Maxima, it may result in a drop in engine performance.