From: Energy efficiency trade-offs in small to large electric vehicles

Energy consumption | Coefficient | Value | Standard error | t value | Pr (> abs t) | p value | Adjusted R^{2} |
---|---|---|---|---|---|---|---|

Model 3: energy consumption = α_{3}+ β_{3}mass + β_{4}power + β_{5}year | |||||||

Certified | (Intercept) | 113 | 101 | 1.12 | 0.27 | < 0.001 | 0.43 |

Mass*** | 6.40e−03 | 8.65e−04 | 7.40 | 4.00e−12 | |||

Power | − 4.02e−03 | 2.80e−03 | − 1.43 | 0.15 | |||

Year | − 5.33e−02 | 5.02e−02 | − 1.06 | 0.29 | |||

Real-world | (Intercept)** | 268 | 112 | 2.39 | 1.81e−02 | < 0.001 | 0.47 |

Mass*** | 5.89e−03 | 9.14e−04 | 6.45 | 1.08e−09 | |||

Power | 3.87e−03 | 2.81e−03 | 1.38 | 0.17 | |||

Year** | − 0.13 | 5.58e−02 | − 2.32 | 2.18e−02 | |||

Model 6: log(energy consumption) = α_{6}+ β_{9}log(mass) + β_{10}log(power) + β_{11}year | |||||||

log(Certified) | (Intercept) | 4.15 | 6.70 | 0.62 | 0.54 | < 0.001 | 0.45 |

log(Mass)*** | 0.60 | 8.00e−02 | 7.47 | 2.69e−12 | |||

log(Power) | − 3.99e−03 | 2.94e−02 | − 0.14 | 0.89 | |||

Year | − 2.88e−03 | 3.24e−03 | − 0.89 | 0.37 | |||

log(Real-world) | (Intercept)** | 19 | 7 | 2.57 | 1.10e−02 | < 0.001 | 0.47 |

log(Mass)*** | 0.46 | 7.78e−02 | 5.97 | 1.33e−08 | |||

log(Power)*** | 5.92e−02 | 2.27e−02 | 2.61 | 9.90e−03 | |||

Year*** | − 9.97e−03 | 3.65e−03 | − 2.73 | 7.02e−03 |