What's the best expected mi/kWh and speed to achieve it?

[RonDawg]

Eco and Eco+ modes are gimmicks. You can replicate all of that with a well tuned educated right foot, to do the exact same thing or better.

Not quite. Eco+ especially dials back some of the electrical load particularly the HVAC. In addition, there are maximum top speeds in those modes; in Eco+ I believe it's around 90 km/hr (57 MPH). As you run low on charge, the car automatically switches to Eco, then Eco+, unless you manually switch back to Normal.

 

[f1geek]

Eco and Eco+ also cut power to the drive motor. In normal mode, all 136 hp is available. In Eco mode, only 94 hp is available and in Eco+, only 74 hp is available. You can get full power if you push the accelerator pedal all the way past the detent at the bottom of pedal travel, but driving in one of the reduced power modes has a dramatic impact on power consumption.

 

[miimura]

Eco modes are just helping you save energy. If you turn down or off the HVAC and modulate your right foot, you can achieve the same thing in Normal mode.

 

[f1geek]

If you use cruise control, then your right foot is not modulating anything. I frequently and consecutively cruise control (in between deactivating to brake as conditions require) and usually run in ECO mode, and my efficiency is in the mid 5's mi/kWh because of it.

 

[NeilBlanchard]

Tires make a big difference. Our 2015 SEL came with Continental tires, which were not great for rolling resistance. Our 2017 SE has Ecopia tires, and they are excellent for rolling resistance.

Aerodynamic drag is huge - the aero wheels that come on many e-Golf's are almost ideal. The underside is smooth, but incomplete - if it continued to the rear bumper, the Cd would be better. Air temperature affects aero drag - and so does elevation, and humidity. Warmer air, higher elevation, and higher humidity - all lower drag. The humidity is counterintuitive, but we are thinking about liquid water.

An average car (like the e-Golf) shifts about 4.5 TONS of air to the side each and every MILE traveled. Think about that for a minute ...

And rain does lower efficiency - you have to accelerate all the water that hits the car as it moves along, and water on the road has to be squished away, and it reduces traction, too.

 

[ms4cd]

Does anyone make the underbody back plate? Someone should...

Tires make a big difference. Our 2015 SEL came with Continental tires, which were not great for rolling resistance. Our 2017 SE has Ecopia tires, and they are excellent for rolling resistance.

Aerodynamic drag is huge - the aero wheels that come on many e-Golf's are almost ideal. The underside is smooth, but incomplete - if it continued to the rear bumper, the Cd would be better. Air temperature affects aero drag - and so does elevation, and humidity. Warmer air, higher elevation, and higher humidity - all lower drag. The humidity is counterintuitive, but we are thinking about liquid water.

An average car (like the e-Golf) shifts about 4.5 TONS of air to the side each and every MILE traveled. Think about that for a minute ...

And rain does lower efficiency - you have to accelerate all the water that hits the car as it moves along, and water on the road has to be squished away, and it reduces traction, too.

 

[JoulesThief]

Does anyone make the underbody back plate? Someone should...

Tires make a big difference. Our 2015 SEL came with Continental tires, which were not great for rolling resistance. Our 2017 SE has Ecopia tires, and they are excellent for rolling resistance.

Aerodynamic drag is huge - the aero wheels that come on many e-Golf's are almost ideal. The underside is smooth, but incomplete - if it continued to the rear bumper, the Cd would be better. Air temperature affects aero drag - and so does elevation, and humidity. Warmer air, higher elevation, and higher humidity - all lower drag. The humidity is counterintuitive, but we are thinking about liquid water.

An average car (like the e-Golf) shifts about 4.5 TONS of air to the side each and every MILE traveled. Think about that for a minute ...

And rain does lower efficiency - you have to accelerate all the water that hits the car as it moves along, and water on the road has to be squished away, and it reduces traction, too.

Why don't you make it and sell it? What a perfect business opportunity!