Can Maintenance and Engine Issues Lead to Worse Than Expected Fuel Economy on the X70?

Home > Gari Forums > Proton Forums > Proton X70 Forums > Proton X70 Poor Fuel Economy Forums

Can Maintenance and Engine Issues Lead to Worse Than Expected Fuel Economy on the X70?

Some Proton X70 owners say factors like dirty filters, improper tire pressure, old engine oil, o r transmission behavior can make fuel economy worse than the 10–12 km/l average shown in reviews. I feel my fuel consumption has progressively gotten worse since new. What maintenance-related issues are most commonly blamed for poor economy on the X70, and how can they be diagnosed and fixed to improve mileage?

Talha Kyanii asked on 19 Dec 2025 15:22:24 pm

1 Answer

13 views |

Gari Master - on 19 Dec 2025 15:23:41 pm

Yes — maintenance and driving habits strongly influence fuel economy on the Proton X70, just like any modern SUV.

Factors that commonly affect real-world mileage:

Tire pressure too low o r uneven can increase rolling resistance and fuel use.

Dirty air filters o r old engine oil can reduce combustion efficiency.

Driving style — frequent hard acceleration o r using high power modes — increases fuel consumption.

Traffic conditions & AC usage — heavy traffic and continuous air-conditioning use also impact figures.

Owners in forums and reviews note that fuel averages range widely based on conditions and habits, from lower in busy cities to better on open roads — typical for this class of SUV with a turbocharged engine.