Tried Eco Mode for the First Time and the Efficiency Numbers Went Completely Crazy: A 20 km Commute Equivalent to an Incredible 98 km/L (230 MPG)!
Hello! I am an owner of the updated Toyota bZ4X.
I usually drive my daily commute in Normal mode to enjoy the car's responsive throttle. Today, on a whim, I decided to test what would happen if I drove an entire day restricted strictly to Eco mode.
To put it plainly: the efficiency numbers were completely out of this world. I genuinely did a double take when looking at the instrument cluster. Here is the real-world side-by-side comparison data.
■ Efficiency Breakdown on a 20 km One-Way Commute
Both days followed the exact same 20 km route to and from work.
[Yesterday: Normal Mode]
- Morning Commute (15°C / 59°F): 9.4 km/kWh
- Evening Return (27°C / 81°F): 10.4 km/kWh => Round-trip average: approx. 9.9 km/kWh
[Today: Eco Mode]
- Morning Commute (17°C / 63°F): 10.1 km/kWh
- Evening Return (27°C / 81°F): 11.2 km/kWh => Round-trip average: approx. 10.65 km/kWh
Even during the cooler morning run (15–17°C), simply switching to Eco mode comfortably broke past the double-digit benchmark to hit 10.1 km/kWh. Then, on the warmer evening drive back when battery temperature was optimal, it logged a jaw-dropping 【 11.2 km/kWh 】.
Seeing an efficiency figure above 11 km/kWh in a midsize SUV weighing over two metric tons is truly astonishing efficiency.
■ Gas-Equivalent Fuel Economy at ¥20/kWh Home Charging Rates
Calculating running costs based on my home charging rate of 20 yen per kWh alongside standard regular pump gas at 175 yen per liter:
[Running Cost per Kilometer at ¥20/kWh]
- Morning (10.1 km/kWh): approx. 1.98 yen / km
- Evening (11.2 km/kWh): approx. 1.78 yen / km
[Distance Traveled per ¥175 Worth of Electricity (Gas-Equivalent MPG)]
- Morning: 175 yen ÷ 1.98 yen = approx. 88.4 km/L (~208 MPG)
- Evening: 175 yen ÷ 1.78 yen = 【 approx. 98.0 km/L (~230 MPG) 】!
On the evening commute back, driving the bZ4X matched the financial fuel efficiency of a conventional car capable of nearly 100 kilometers per liter. Covering that 20 km commute consumed just around 36 yen (roughly $0.24) in electricity—less than a third of the price of a can of vending machine coffee.
■ How Does Eco Mode Actually Drive?
Eco mode softens the initial accelerator response, naturally preventing aggressive power draw, yet electric instant torque means driving through city stop-and-go traffic remains effortless and responsive.
Climate control output is also smoothly optimized, making Eco mode an effortless way to see range and efficiency jump significantly during mild spring and autumn weather.
Logging over 11 km/kWh and matching an effective 98 km/L: with gas prices staying elevated, today was a vivid reminder of just how fundamentally efficient and ridiculously cheap to run the bZ4X can be!