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Greenest

Model Year 2020

Make and model Specifications Emission standarda MPG cityb,c MPG hwyb,c Green Score
Toyota Prius Prime Electric (Li-Ion) / 1.8L 4, auto LEV-III SULEV30 / Tier 3 Bin 30 4.26 / 55 3.58 / 54 66
Hyundai Ioniq Blue1 1.6L 4, auto  Tier 3 Bin 30 57 59 66
Toyota Prius Eco2 1.8L 4, auto CVT  LEV-III SULEV30 / Tier 3 Bin 30 58 53 65
Ioniq Electric Electric (Li-Ion) Tier 3 Bin 0 / ZEV 4.3 3.6 65
Honda Insight3 1.5L 4, auto CVT  LEV-III SULEV30 / Tier 3 Bin 30 55 49 64
BMW i34 Electric (Li-Ion) Tier 3 Bin 0 3.7 3.0 63
Mini Cooper SE Hardtop Electric Electric (Li-Ion) Tier 3 Bin 0 3.4 3.0 63
Toyota Corolla Hybrid 1.8L 4, auto CVT  LEV-III SULEV30 / Tier 3 Bin 30 54 54 63
Toyota Camry Hybrid LE 2.5L 4, auto CVT  LEV-III SULEV30 / Tier 3 Bin 30 51 53 63
Kia Niro Plug-in Hybrid Electric (Li-Ion) / 1.6L 4, auto  Tier 3 Bin 30 3.34 / 48 2.95 / 44 62
Honda Clarity Plug-in Hybrid Electric (Li-Ion) / 1.5L 4, auto  Tier 3 Bin 20 / LEV-III SULEV20 3.49 / 44 3.04 / 40 62
Kia Niro FE 1.6L 4, auto  Tier 3 Bin 30 52 49 62

[P] Denotes Premium Gasoline. 
"Auto CVT" denotes continuously variable automatic transmission.
a A listing with two emission standards (e.g., LEV II SULEV / Tier 2 Bin 3) denotes a single vehicle carrying both a federal and a California emission certification. Green Scores for such listings reflect the cleaner of the two certifications.
b Fuel economy for electric vehicles is provided in miles per kiloWatt-hour (kWh).
c Fuel economy for plug-in hybrids is provided in miles per gallon (mpg) for gasoline operation and in miles per kiloWatt-hour (mi/kWh) for electric operation.
1. The Ioniq Plug-in Hybrid achieved a score of 64
2. The standard Prius achieved a score of 62
3. The Honda Insight Touring achieved a score of 61
4. The BMW i3s achieved a score of 62