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ELR Stats is no longer operational, but when it was working it interfaced with OnStar to collect data about the performance of Cadillac ELRs driving in the real world.

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MPG: Simply total miles driven divided by total gallons of gas burned. This is how the Volt reports MPG, although since the electricity is counted as "free" it doesn't give a true picture of the energy used. On the other hand, this is literally accurate. :)

MPGe: Counts all electric miles driven as 93, 94 or 98 "MPGe", depending on the model year of the vehicle. See this wikipedia page for the gory details, but in short, 33.7 kw*hrs of energy has been determined to be equal to one gallon of gasoline, and the Volt is rated at a combined 93 MPGe (0.36 kw*hrs/mi) by the EPA for the 2011 model, 94 MPGe for 2012, 98 MPGe for 2013 and up, and 106 MPGe for 2016 and up. This gives a better account of the true energy usage of the vehicle, in a number that's easily comparable to traditional cars. However, this is just an estimation - I cannot currently read raw kw*hrs from Onstar, so actual energy usage could be better or worse than this number. Hopefully we can get a real MPGe calculation in the near future. The formula is: Total Miles / (Gallons Burned + (EV Miles / EPA rating))

MPGCS: Charge-Sustaining MPG, or what the Volt is getting on gas only.

Graph Options

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Show Data By Year:

Raw Data

Month Vehicles EV Miles Total Miles EV MPVDD Total MPVDD EV % MPG MPGe MPGCS
May 2014 5 3550.38 3755.40 33.47 36.63 94.5 606.54 75.89 33.11
June 2014 9 3933.26 5939.53 24.23 37.48 66.2 101.91 55.90 34.42
July 2014 13 6361.78 9429.68 26.39 28.99 67.5 109.90 57.72 35.76
August 2014 20 11494.41 15334.77 27.60 34.10 75.0 142.01 61.79 35.56
September 2014 23 14734.03 17170.13 27.43 32.37 85.8 246.08 68.83 34.91
October 2014 26 16211.10 24068.36 27.07 37.82 67.4 107.11 56.98 34.97
November 2014 26 13731.67 16986.93 26.44 31.04 80.8 144.99 59.68 27.78
December 2014 30 13971.75 18752.55 24.20 33.46 74.5 112.33 55.59 28.64
January 2015 34 13576.85 16479.97 25.08 31.25 82.4 132.71 56.88 23.38
February 2015 26 9630.40 11775.78 30.32 36.09 81.8 112.49 53.01 20.49
March 2015 30 21723.64 26465.62 32.23 39.62 82.1 164.90 62.21 29.55
April 2015 37 25967.56 33800.65 30.67 38.51 76.8 144.18 61.33 33.41
May 2015 45 29341.99 39198.93 29.91 41.32 74.9 133.12 60.09 33.47
June 2015 42 27382.24 34560.19 29.63 37.86 79.2 164.53 63.53 34.17
July 2015 41 29077.17 36880.33 32.77 41.93 78.8 162.59 63.43 34.40
August 2015 43 28531.07 41894.44 32.72 46.18 68.1 109.84 57.44 35.04
September 2015 42 28918.64 41088.03 33.58 45.52 70.4 112.71 57.29 33.38
October 2015 39 28968.31 37676.66 31.12 40.31 76.9 141.65 60.84 32.74
November 2015 41 25269.37 34448.16 27.39 39.81 73.4 119.94 57.86 31.96
December 2015 44 23558.54 29139.00 28.24 34.64 80.8 150.77 60.63 28.87
January 2016 41 25169.64 31666.33 28.00 33.81 79.5 114.02 54.16 23.39
February 2016 43 24047.08 29111.28 28.67 34.82 82.6 146.57 59.18 25.50
March 2016 50 32385.83 39254.12 29.73 35.20 82.5 170.98 62.85 29.92
April 2016 60 39943.56 52930.54 30.47 40.61 75.5 128.10 58.79 31.43
May 2016 66 43275.09 59675.83 30.37 42.21 72.5 122.54 58.81 33.68
June 2016 67 40712.65 53842.95 32.26 42.75 75.6 134.13 59.96 32.71
July 2016 52 33887.93 40958.83 30.88 37.60 82.7 189.58 65.08 32.73
August 2016 59 42153.22 55086.54 31.56 41.46 76.5 137.37 60.20 32.25
September 2016 60 41561.55 59313.67 30.95 43.65 70.1 111.72 57.16 33.44
October 2016 60 40476.77 51302.87 30.31 38.45 78.9 155.31 62.27 32.78
November 2016 61 36605.27 53683.24 28.73 42.35 68.2 101.86 55.15 32.41
December 2016 62 35587.88 48814.27 28.45 38.96 72.9 96.49 51.94 26.15
January 2017 63 39048.59 51032.16 29.32 38.84 76.5 111.00 54.53 26.07
February 2017 65 38963.48 51790.42 29.24 38.88 75.2 115.88 56.17 28.70
March 2017 66 47230.99 62444.41 30.79 41.38 75.6 120.02 56.96 29.24
April 2017 67 45875.03 63919.30 31.79 44.54 71.8 115.06 57.33 32.48
May 2017 69 47096.52 66860.64 31.40 45.15 70.4 111.18 56.87 32.86
June 2017 69 44855.30 60654.26 31.50 42.88 74.0 120.57 57.76 31.41
July 2017 65 40598.58 53390.81 29.24 38.94 76.0 135.02 59.95 32.35
August 2017 67 43803.80 62187.87 32.14 45.22 70.4 108.22 56.08 31.99
September 2017 73 42197.16 58544.00 30.74 42.40 72.1 115.81 57.39 32.34
October 2017 71 40243.39 58289.10 29.70 41.68 69.0 103.91 55.42 32.17
November 2017 53 25896.44 44023.13 28.07 47.67 58.8 75.51 48.98 31.09
December 2017 68 26643.97 41403.62 28.00 41.52 64.4 77.02 48.00 27.46
January 2018 30 14202.32 17207.97 27.81 34.82 82.5 138.34 57.82 24.16
February 2018 35 18131.11 22681.12 29.12 35.92 79.9 133.76 58.06 26.83
March 2018 39 25375.40 33680.65 30.81 40.87 75.3 122.05 57.53 30.10
April 2018 43 27361.30 35196.79 31.78 40.91 77.7 139.74 60.11 31.11
May 2018 50 30937.33 40927.33 33.79 44.95 75.6 134.32 60.01 32.79
June 2018 54 35631.65 49109.71 33.78 46.23 72.6 117.45 57.60 32.23
July 2018 58 39974.40 52262.26 32.57 42.70 76.5 136.97 60.14 32.20
August 2018 62 43142.38 57048.72 33.49 44.60 75.6 132.22 59.57 32.23
September 2018 63 36248.65 47620.35 29.87 39.23 76.1 135.38 59.99 32.33
October 2018 66 39916.89 54880.03 30.05 40.44 72.7 118.09 57.68 32.20
November 2018 68 33254.91 46177.47 26.80 37.20 72.0 102.09 53.83 28.57
December 2018 67 34310.13 49200.50 26.34 37.87 69.7 93.11 51.96 28.18
January 2019 68 33505.25 44348.49 27.16 35.96 75.5 99.43 51.89 24.31
February 2019 66 31359.95 42993.12 27.76 38.13 72.9 94.39 51.31 25.54
March 2019 67 36814.49 50534.30 27.00 36.98 72.9 106.03 54.60 28.79
April 2019 69 36275.45 55560.36 27.13 41.21 65.3 91.02 52.77 31.59
May 2019 65 36250.94 52160.31 28.33 40.38 69.5 107.55 56.26 32.80
June 2019 65 33291.84 45247.89 28.37 38.71 73.6 120.96 58.00 31.96
July 2019 66 34705.22 49237.93 27.77 38.97 70.5 108.73 56.20 32.09
August 2019 68 34185.72 46371.98 27.68 37.42 73.7 119.31 57.56 31.35
September 2019 67 31838.59 48824.65 25.86 39.05 65.2 92.46 53.28 32.17
October 2019 69 32926.35 50710.64 24.27 37.39 64.9 90.81 52.83 31.85
November 2019 69 30656.93 52434.04 23.75 40.21 58.5 73.60 48.27 30.57
December 2019 70 26910.55 43949.09 22.07 36.48 61.2 75.84 48.42 29.40
January 2020 67 29295.65 43419.10 23.40 35.63 67.5 87.97 51.03 28.61
February 2020 62 27281.62 39138.77 25.29 36.41 69.7 92.00 51.63 27.87
March 2020 65 24951.97 35949.34 24.21 35.06 69.4 102.59 54.91 31.38
April 2020 62 12975.74 19096.84 19.20 28.14 67.9 102.46 55.41 32.84
May 2020 64 17065.49 26255.50 20.92 32.88 65.0 93.17 53.59 32.61
June 2020 61 20219.37 32851.38 21.45 35.66 61.5 84.17 51.58 32.36
July 2020 59 20880.84 30335.09 21.85 31.72 68.8 102.58 55.12 31.97
August 2020 58 18740.23 29428.78 22.65 36.48 63.7 86.07 51.59 31.26
September 2020 53 17677.74 28326.13 23.29 37.29 62.4 90.98 53.76 34.20
October 2020 53 17724.50 27705.67 24.07 34.41 64.0 93.38 54.02 33.64
November 2020 52 15514.64 25184.98 22.65 37.87 61.6 84.03 51.51 32.26
December 2020 52 16774.43 26987.88 21.18 34.39 62.2 79.28 49.52 30.00
January 2021 48 14677.45 24209.40 22.18 36.13 60.6 73.82 47.76 29.06
February 2021 44 13766.22 20012.66 25.08 36.28 68.8 86.25 50.04 26.92
March 2021 43 16431.47 23405.62 24.04 33.95 70.2 106.12 55.60 31.62
April 2021 41 13906.42 20650.90 27.25 42.32 67.3 100.06 54.93 32.68

Daily Driving Histogram

Blue Bars Represent:


This histogram charts the percentage of days that a Volt has driven a given number of miles. The green bars represent EV-only usage, and there are multiple options for the blue bars:

  • Total Mileage When Gas Used: If this is selected, the blue bars will represent the total distance driven when any gas was used. For example, if you drove 50 miles, 40 of which were EV powered, you would have a green tick at 40 and a blue tick at 50 in this mode.

  • CS-Only Mileage: In this mode, the blue bars will represent the number of miles driven in charge sustaining mode only. For our 50 miles/40 EV example, you would get a green tick at 40 and a blue tick at 10 in this mode.

  • Nothing - Show EV Only: Obviously, will clear the blue bars and only show EV usage.

In any mode, a day without gas usage will not get a blue tick. A vehicle's "day" is determined by the time zone of the zip code entered for the car. If the car doesn't have a zip code, central time will be used.

Group Name Members EV Miles Total Miles EV% MPG MPGe MPGCS
Michigan ELR 12 301711.78 472509.93 63.9 95.91 54.90 34.67
SoCal ELR 13 450745.08 651795.49 69.2 96.23 53.12 29.68
TX ELRs 8 241618.83 331426.48 72.9 112.84 56.33 30.58
Mason Dixon ELRs 3 157072.19 251498.79 62.5 87.60 52.54 32.89
Washington State ELR Owners Group 1 17449.78 28079.50 62.1 87.84 52.73 33.25
Black ELRs 6 250595.75 366350.44 68.4 90.72 51.64 28.66