wws said:
The Grapevine is always entertaining in its own right. Assuming you set "charge mode" some time before hitting the hill, so that there is plenty of battery power available? (That is the normal technique for a Chevy Volt with its "mountain mode". Though it is not needed as much with the Gen 2 Volt as the Gen 1 Volt did.)
There is plenty of
energy in the batteries to make the climb if you use Charge mode or Save mode and keep at least 50% on the gauge before starting. However,
power is another matter, and is lacking, even when drawing from the batteries at 5C. Mitsu didn't sufficiently oversize the ICE, and the car beats the hell out of its batteries as a result. It has trouble maintaining 90 mph up the Grapevine even with the accelerator pedal floored. My friend reported that his 2016 Cayenne S E-Hybrid can go up the Grapevine @ 90 mph with its ICE barely even breaking a sweat and doing 2000 RPM, and not drawing or using any power from its batteries at all. The trade-offs with that car, which I didn't like, were both the lack of the HOV sticker in California as well as the fact that it has a 10.8 kWh battery and only goes 12-14 miles in EV mode (compared to the Outlander's 12 kWh and 22-28 miles). That's what happens when you push all of the power from the batteries and motors through a mechanical transmission, transfer case, and two differentials.