How Much Does Hi‑Octane Fuel Improve Fuel Economy and Performance?

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How Much Does Hi‑Octane Fuel Improve Fuel Economy and Performance?

The MG HS fuel lid recommends 95 RON high‑octane petrol. Owners claim that using regular fuel can lead to poorer mileage and long‑term engine issues [turn0search2]turn0reddit14turn0reddit12. Is the difference in fuel economy and performance significant enough to justify the higher price?

Talha Kyanii asked on 26 Jul 2025 12:14:17 pm

1 Answer

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Gari Master - on 26 Jul 2025 12:17:18 pm

All official references and fuel‑lid recommendations indicate 95 RON high‑octane fuel is required. One owner noted:

“Without using Hi‑Octane, engine issues can occur—and fuel average remains low when using petrol not recommended.”
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Owners using high‑octane fuel report ** smoother performance** and slight improvement in mileage ~1 km/L on highways.

Bottom line: While high-octane petrol is costlier, it’s critical for both preserving engine health and maintaining acceptable fuel numbers.