BMW i3 Engine

BMW i3 Engine – Full Information

The BMW i3 is an electric car, from the first emission-free I series from BMW. In addition, BMW offers a range extender option (REx), which gets power from a 647 cc two-cylinder petrol engine with a 9-liter fuel tank. The heart of the BMW i3 is a tailor-made electric motor with the BMW eDrive label. BMW also refers to it as a synchronous hybrid. It is mount on the rear of the car and drives the rear wheels via a single-speed transmission gearbox. So here we will get to know about the BMW i3 Engine in detail. We will discuss its specifications, common issues, and maintenance. Through this information. you will be able to make informed decisions related to this new generation engine from BMW.

Table of Contents

  • BMW i3 Engine – Full Specifications
  • Fuel economy and range
  • How many miles can a BMW i3 go?
  • Conclusion

BMW i3 Engine – Full Specifications

The i3 gets its power from a 168 hp electric motor in the standard vehicle or 181 hp in the i3. This connects to the rear axle via a single-stage gearbox with a fixed ratio and uses a liquid-cooled lithium-ion battery. The i3 has neat packing. The battery fully integrates into the rear cabin floor, whereas the engine is under the boot floor. Its powerful electric motor and carbon-fiber structure prevent the weight from inflating further.

In addition, thanks to the lightning-fast torque of the BMW i3, it accelerates quickly with the electric motor. It reaches a time of 0-62mph in 7.3 seconds. On the more powerful i3s, this drops to 6.9 seconds, while the top speed increases from 93 mph to 99 mph. The sportier i3s version has a new and more responsive traction control technology. What this means is less power waste on just spinning the wheels. The initial torque bump triggers the i3, but acceleration decreases with increasing speed. Below are the specifications of the BMW i3(REx) in detail:

  • Engine Type and Fuel Required – Electric/ Gas
  • Displacement (liters/cubic inch) – 0.65 L/39.5 Cubic inch. REx
  • Fuel System Technology – Sequential MPI (By injection)
  • Maximum Horsepower at RPM – 170 @ 4800
  • Maximum Torque at RPM – 184
  • Drivetrain – Rear Wheel Drive
  • Transmission – Automatic
  • Battery type – Lithium-ion 
  • Energy – 33.2 kWh
  • Voltage – 353 V
  • Charging times – 120V: 8.0 h, 240V: 4.5 h, 400V: 0.8 h
  • Cooling – Liquid

Fuel economy and range

The US Environmental Protection Agency rated the power consumption of the BMW i3 (60 Ah) at 27 kWh / 100 mi (16.9 kWh / 100 km). This is with a combined energy consumption of 124 Miles Per Gallon of Gasoline. This is with an electric range of 81 miles. With these values, the fully electric BMW i3 is the most fuel-efficient EPA-certified BMW vehicle of all years. This is regardless of the fuel type. The REx variant of the BMW i3 has slightly lower ratings than the BMW i3 all-electric. This is because of the extra weight of the twin-cylinder gasoline engine that is used in the i3 REx. The BMW i3 REx also surpassed the other similar cars as the most efficient EPA-certified car with a gasoline engine in 2014. 

The BMW i3 engine with the 94 Ah battery has a full range of 114 miles. The combined fuel consumption of the 94 Ah i3 is 118 MPGe. Compared to 124 MPGe of the 60 Ah battery model. The BMW i3 REx with a larger battery of 94 Ah has a range of 97 miles, while the combined fuel consumption is 111 MPGe. Range with the gasoline engine also increased to 83 miles from 78 miles in the prior versions. The battery power is also increased to 120 Ah, resulting in a full capacity of 42.2kWh. The 2019 BMW i3 REx that has a 120 Ah battery has a battery-only range of 126 miles. It also has a combined gasoline and electric range of 200 miles and a combined fuel economy of 100MPGe.

How many miles can a BMW i3 go?

Well, if you combine both the engine’s ability to give mileage, the distance that a BMW i3 can reach will be around 600 km. As we have already discussed, the ability of the gasoline engine to reach the maximum distance is around 560 km. Moreover, the plug-in hybrid motor is what makes the BMW i3 Rex car different from other BMW cars. 


To conclude the BMW i3 is a reliable and great car engine to have in your BMW car. We have discussed its full specifications, fuel economy and range, and also miles it can go without a refill. We are confident that you have got all the required information that you are looking for. For more such readings you can refer to the BMW Active Hybrid 5 Engine, BMW 840i Engine Model. That was all about the BMW i3 Engine. Hope you find full value in it.

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