Thanks to my recent discovery of Turo, I was able to try this last night for a mere $10 ($30 rental - 1st time user credit)
- Started with full charge in Pleasanton. After driving a couple miles around town, left with 85 miles with A/C off
- Took i-680 to San Jose, then switched to 17, driving in normal mode, lights on, A/C off, radio on, speeds 65-70 mph
- At 17's Hamilton exit, estimated range remaining was 41 miles. I'd covered 35 miles averaging 3.9 m/kWh, essentially using almost half the battery capacity.
At this point I'm 27 miles from Santa Cruz and approaching the mountains, so switched to Eco mode
- As I started the climb near Lexington reservoir, efficiency average started to drop dramatically. I'm still in Eco with speeds 50-55 mph. Halfway up the hill I'd already burned 20 miles of estimated range despite having only traveled 10 :?
- A couple more miles up the road near Redwood Estates/Holy City, the warning flash came on for 16 miles remaining
- At the summit, estimated range was now down to 11 miles. Santa Cruz was 13 miles away :shock:
- But now the saving grace - regeneration! During the 8-mile descent, I was able to use D2 for most and even D3 while behind a truck, yet kept speed above 50 mph
- Coming in to Scotts Valley, I'd already made it back to 17 miles estimated range
- Increased speed to 65-70 mph to keep up with traffic. To my surprise, I continued to gradually gain estimated range on the downhill sections, even at highway speeds
- As I rolled on to Ocean Avenue in Santa Cruz, estimated range was at 20 miles.
Final trip average was 4.0 m/kWh compared to 3.9 m/kWh on I-680 section driving. Granted these aren't quite apples to apples comparison because my speed on the highway was 10-15 mph faster, but the point is I really didn't seem lose much range going over Patchen Pass. Really wish the e-Golf would provide kWh remaining, because I now fully understand the term "Lie-o-meter". I expected some wonkiness, but to go by it alone proved to be nerve-wracking :|
Now today I'll see what numbers I see going from Santa Cruz to Los Gatos, and should be able to try Eco+ mode after I clear Scott's Valley.