The Toyota 4Y engine, with a displacement of 2.2 liters and a four-cylinder, inline configuration, is well-regarded for its reliability and suitability in utility and commercial vehicles[2]. In terms of fuel consumption, figures vary depending on the specific setup (carbureted or EFI), vehicle application, and driving conditions.
For the EFI (Electronic Fuel Injection) version of the Toyota 4Y, reported fuel consumption is approximately 10–12 km/L under typical use[3]. Carbureted versions of the 4Y commonly achieve fuel consumption in the range of 6.5–9.5 km/L, with owners reporting averages such as 9.47 km/L (mostly urban driving) and 7–8 km/L for mixed or long-distance driving[7]. Some users have noted that engine condition and tuning can impact real-world results significantly.
Factory fuel consumption rates are often provided in terms of specific fuel consumption (SFC). For the 4Y, this is typically quoted as:
- ≤295 g/kW·h for carbureted engines[1]
- ≤275 g/kW·h for electronic injection (EFI) models, indicating improved efficiency[5]
Combined with the engine’s maximum output of around 96 hp and torque of 180–193 Nm depending on the variant[2][3][5], these fuel efficiency numbers make the 4Y a practical choice for fleets and applications where both reliability and manageable operating costs are essential.