Best by Class

Starting with the latest model year, these vehicles scored highest in their vehicle class.

Year	Make	Model	Specification	Emission Standard	MPG City	MPG Hwy	Green Score	Class Ranking	Class
2020	BMW	i3s	Electric (Li-Ion)	Tier 3 Bin 0	3.69	3.02	62	Superior	Compact Cars	Details
2020	Volkswagen	e-Golf	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	3.61	3.09	62	Superior	Compact Cars	Details
2020	Honda	Clarity PHEV	Electric (Li-Ion) / 1.5L 4, auto	Tier 3 Bin 20 / LEV-III SULEV20	3.49 / 44	3.04 / 40	62	Superior	Midsize Cars	Details
2020	Toyota	PRIUS	1.8L 4, auto CVT 4wd	LEV-III SULEV30 / Tier 3 Bin 30	53	48	62	Above Average	Midsize Cars	Details
2020	Kia	Niro FE	1.6L 4, auto	Tier 3 Bin 30	52	49	62	Above Average	Small Wagons	Details
2020	Kia	Niro Plug-in Hybrid	Electric (Li-Ion) / 1.6L 4, auto	Tier 3 Bin 30	3.34 / 48	2.95 / 44	62	Superior	Small Wagons	Details
2020	Hyundai	Kona Electric	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	4.06	3.23	61	Superior	Compact SUVs	Details
2020	Honda	ACCORD	2.0L 4, auto	LEV-III SULEV30 / Tier 3 Bin 30	48	47	61	Above Average	Midsize Cars	Details
2020	Honda	INSIGHT TOURING	1.5L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	51	45	61	Above Average	Midsize Cars	Details
2020	Kia	Niro	1.6L 4, auto	Tier 3 Bin 30	51	46	61	Above Average	Small Wagons	Details
2020	Kia	Optima plug-in hybrid	Electric (Li-Ion) / 2.0L 4, auto	LEV-III SULEV30 / Tier 3 Bin 30	3.05 / 39	2.95 / 44	60	Above Average	Midsize Cars	Details
2020	Toyota	CAMRY HYBRID XLE/SE	2.5L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	44	49	60	Above Average	Midsize Cars	Details

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auto cvt

denotes continuously variable automatic transmission.

auto stk

denotes manually adjustable automatic transmission

[CNG]

denotes Compressed Natural Gas

[P]

denotes premium gasoline.

[D]

denotes diesel

Emission Standards:

A listing with two emission standards (e.g., Tier 2 bin 5 / ULEV II) denotes a single vehicle carrying both a federal and California emission certification. Green scores for such listings reflect the cleaner of the two certifications.

Battery-Electric Vehicle Fuel Economy:

Fuel economy for pure battery-electric vehicles is provided in miles per kilowatt-hour.

Plug-in Hybrid Fuel Economy:

Fuel economy for plug-in hybrids is provided in miles per gallon for gasoline operation and in miles per kilowatt-hour for electric operation.

"...It's easy-to-use rating system makes it a snap to see the green from the mean. So enlighten your mind and free your lungs and check out ACEEE's Green Book before you buy."

Motor Week, Maryland Public Television

"For those of you who are more inclined to buy green than you are to drive through it as fuel prices rise, I can recommend no better resource than ACEEE's Green Book...[It] offers solid, practical, well-researched, balanced advice."

Warren Brown, Washington Post

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