The fuel consumptions of Proton Iriz and Persona primarily depend on engine configuration and driving conditions, though official test data provides general reference ranges.
The Iriz is equipped with 1.3L and 1.6L VVT naturally aspirated engines. The 1.3L manual variant achieves approximately 14 km/L (city) to 18 km/L (highway) under standard test conditions, with the automatic version being 1-2 km/L lower. The 1.6L version consumes about 10% more fuel.
The Persona is equipped with a 1.6L engine, delivering combined fuel economy of about 15-16 km/L for manual transmission and 14-15 km/L for CVT variants. Its heavier body results in slightly lower fuel efficiency compared to the Iriz.
In real-world driving, fuel consumption may worsen by 20% in heavy traffic conditions, while steady-speed cruising on highways like the North-South Expressway may approach official figures.
Owners are advised to maintain proper tire pressure (190-210 kPa), avoid aggressive acceleration, and utilize cruise control to optimize fuel economy. These models deliver average fuel efficiency for their class in Malaysia, with regular maintenance (including throttle body cleaning and spark plug replacement) being crucial for sustaining optimal performance.
