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  1. Nokian zLine A/S

    Generation 2 Volt (2016-2020)
    Hi - new to forum - just wanted to know if anyone has tried these tires. Walmart has them for about half of name brands (Continental, Michelin) and they Nokian claims they are engineered for electric cars. Thanks
  2. Engine Efficiency

    Generation 2 Volt (2016-2020)
    I drove my new 2018 Chevy Volt today for a longer trip than normal. In particular, I drove it for about 200 km. The first 95 km (approx.) was completely driven using EV. I let the charge drop to zero to see how the gasoline engine would perform. I was disappointed to find that I used about...
  3. Flat route to maximize efficency

    Propulsion Systems - Chevy Volt
    Maybe put his under the gamification of driving. What are your thoughts choosing a route based on elevation change and slope? I watched a Top Gear episode a few years ago where they debated what was best for fuel efficiency - flat or 'what goes up must come down'. I found a website...
  4. Proper Use Of "L" Drive Setting

    Newcomers to GM-VOLT.COM (See here for FAQs)
    Can someone explain the "rules" for using the "L" position on a 2013 Volt? It appears that it cannot be used for regen over 40 mph. When can "L" be selected without harming the transmission? Is it more efficient to use "L" than "D" in normal city driving if you can tolerate the stronger regen...
  5. Electric Range versus Speed on Highways

    Generation 2 Volt (2016-2020)
    Creating a thread to gather data on how speed affects electric range. I noticed that at 75mph my electric range seems terrible - but at 60mph it seems much better. Anyone with a regular highway commute - so we can get multiple datapoints under the same conditions - any data to share (total...
  6. 2015 Volt Mountain Mode vs CS/Hold Mode efficiency

    Generation 1 Volt (2011-2015)
    Sometimes, I'll know that I have quite a few miles to go before charging, and my battery is nearly empty. I've been toying with the idea of going into Mountain Mode for a few miles and letting it charge up the battery a little bit so that I can drive on electricity for a little longer. My idea...
  7. 4 Years of Data kWh/100 miles vs Average Monthly Temperature

    Chevy Volt General Discussion, News, and Events
    I have been keeping track for 4 years now the kWh / 100 miles from the OnStar monthly diagnostic emails. I have charted this using the monthly average temperature as reported by the Capital Weather Gang from the Washington Post. Since I rarely (very rarely) use climate control, the differences...
  8. 3.5 Years worth of OnStar Data Comparing temperature vs kWh/100 miles

    Chevy Volt General Discussion, News, and Events
    OnStar data is harvested from the monthly diagnostic emails. Average monthly temperature comes from The Capital Weather Gang of the Washington Post which posts the average monthly temperature for National Airport. I only drive locally, rarely use climate control. So, any differences can be...
  9. "Efficiency" of Mountain Mode

    Generation 1 Volt (2011-2015)
    Intuitively, it seems that in Mountain Mode, the additional steps in the energy chain would reduce performance, but: Locomotives and ships use engines that drive generators that drive motors that drive the propulsion mechanism (propeller, wheels). In such complex "serial hybrid" systems...
  10. Volt Design: Thoughtfulness

    Totally Off-Topic
    One fine evening, I was driving around my Volt, appreciating another Volt's beautiful tail-lights. I took out myPhone to take a nice photo. To my surprise, I couldn't get one shot with both tail lights lighted-up. At a stop, I noticed carefully that the LED tail-lights must have been optimized...
  11. Spark Charging Efficiency

    Li-Ion Battery, Charging, Mgmt System - Spark EV
    Has anyone measured the kilowatt-hours consumed versus the miles driven for the 110 volt charging system and compared it to the 240 volt charging system. I have seen posts that 240 volt charging is more efficient (more miles per kilowatt-hour consumed). Would like to see some actual...
  12. The Most Efficient Volt

    Problems, Driver Warnings or DTCs - Chevy Volt has not failed in its entertainment value. Just check out the electric and combined economies during the last 30 days for my Volt: To put it in other terms, according to my Volt's range is about one mile per full battery charge... If I show this to folks it will surely...
  13. 2 Years of OnStar kWh Data vs Average Daily Temperature

    Chevy Volt General Discussion, News, and Events
    The kWh/100 miles data was taken from the monthly OnStar diagnostic reports. Temperature data is from the Washington Post Capital Weather Gang. All months were 100% EV, except for Jan '12 and Feb '12 where I was a lowly 98.3% and 98.5% EV respectively. The outlier is Aug '13 with 23 kWh...
  14. Excellent efficiency is possible even when it is not convenient to recharge.

    Generation 1 Volt (2011-2015)
    The numbers in the attached photo of my 2012 energy usage screen speak for themselves. However, additional details may be of interest to some. This was a one day round trip without recharge. There were periods of rain at both the start and end of the day. Temperature at the start of the...
  15. Trip - Adelaide to Portland

    On a trip from Adelaide to Portland ~550km I returned an overall 5.0l/100km. (About 5.6l/100km on petrol only.) Very happy with this result. A change in altitude of about 100m in Adelaide down to 20m in Portland. I traveled through the Adelaide hills in EV mode then once on the highway 110km/hr...
  16. Display MPGe not MPG on the efficiency page

    Suggestions for GM - Chevy Volt
    Allow the driver to enter electric price and gas price and calculate an effective MPG. It is not realistic to ignore the cost of electricity.
  17. Why 65%?

    Generation 1 Volt (2011-2015)
    This morning, I'm driving (19 miles) without any HVAC (that I know of), no headlights, no wipers, no seat warmers, no defoggers, and my windows are up. I'm also in Fan Only mode--with the fan off. The outside temperature was about 51F (11C). With all this in place, why is my Climate Setting on...
  18. Electric and Combined Lifetime Efficiency

    Generation 1 Volt (2011-2015)
    Wonder how many people have missing lifetime electric and combined efficiency indicators in their page. I know I do.
  19. Regen braking efficiency of the FFE: 95%

    Hybrid and Electric Vehicle Competitors
    In a recent trip, my friend Slyastro (who owns a Ford Focus Electric and a 2012 Volt) did a climb of Mt. Washington autoroad with his FFE. He started at the bottom of the hill, freshly fully recharged, climbed to the top , took a picture of his energy screen : We can see that he had driven...
  20. How to get meaningful energy efficiency data form a Volt?

    Generation 1 Volt (2011-2015)
    I'm trying to find the true miles per energy input (as kWh or gallons of gas) efficiency data vor my new Volt. Can you help checking whether this assessment is correct? It does not seem to match the info displayed on or The Volt itself prominently shows the MPG measure...