Fuel economy

Regular vs. premium gas: which do you need?

3 min read

Premium costs more per litre. Whether it helps depends entirely on what your engine requires.

Premium gasoline has a higher octane rating, which resists engine knock in high-compression or turbocharged engines.

Follow your owner's manual

If the manual says premium is required, use it. If it says recommended, regular is usually fine with a small drop in performance. If it lists regular, premium offers no benefit.

Mid-grade is a middle ground

Mid-grade sits between the two and is rarely required. Check the manual before paying extra.

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