92 vs 95 Octane: The Fuel Consumption Myth Debunked by ITALON Experts
A technical expert from ITALON confirms that switching between 92 and 95 octane fuel has a negligible impact on a car’s fuel consumption. Real-world tests show that a calm driving style (eco-driving) and fuel system maintenance are the only significant factors for efficiency. Premium fuel brands do not compensate for aggressive driving habits.
Is the price difference between RON 92 and RON 95 worth it for fuel economy? Many vehicle owners and fleet managers believe that “premium” fuels like Pulsar or Eco 92 automatically lower consumption. However, an ITALON technical specialist has conducted long-term testing to prove that these expectations are often based on marketing rather than physics.
The “Retiree Style” vs. Fuel Branding
According to the expert, if a vehicle’s fuel system is properly maintained, the octane rating becomes a secondary factor. The most critical variable is the driver’s behavior.
“If the car is in good condition and your driving style is calm—often called ‘retiree style’—that is the only thing that truly affects fuel consumption,” notes the ITALON specialist.
Real-World Data: Mitsubishi Outlander Test
The expert monitored the onboard computer of a Mitsubishi Outlander across various fuel types and brands in the Russian/CIS market (at an ambient temperature of).
| Fuel Type | Brand / Series | Result (L/100 km) |
| Regular 92 | Standard | 12.6 |
| Pulsar / Eco 92 | Premium 92 | 12.6 |
| Shell 92 / 95 | Branded | 12.6 |
| Regular 95 | High Octane | 12.6 |
The Result: Despite the different chemical compositions and price points, the consumption remained stagnant at 12.6 liters per 100 km.
Business Insight: Combating Driver Excuses
For fleet owners, this data is a powerful tool. Drivers often blame high consumption on “poor fuel quality.” The ITALON test proves that if the onboard computer is stable but fuel costs rise, the real cause is likely fuel theft or aggressive driving.
By using ITALON fuel level sensors (DUT) and telematics, companies can move past these myths and achieve real ROI through behavior modification, not just fuel selection.
FAQ
Q: Does 95 octane fuel give better mileage than 92?
A: No. In a healthy engine like the Mitsubishi Outlander tested by ITALON, both 92 and 95 octane resulted in the exact same consumption of 12.6 L/100 km. Economy is driven by behavior, not octane.
Q: Why is my fuel consumption high even with premium fuel?
A: High consumption is typically caused by technical faults in the fuel system or an aggressive driving style. ITALON experts recommend monitoring “Eco-driving” metrics to identify real savings.