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
2021	Lexus	UX 200	2.0L 4, auto CVT	LEV-III ULEV50 / Tier 3 Bin 50	29	37	53	Average	Midsize Cars	Details
2021	Mini	MINI COOPER SE COUNTRYMAN ALL4	Electric (Li-Ion) / 1.5L 3, auto stk Awd	LEV-III ULEV125 / Tier 3 Bin 125	2.23 / 29	2.13 / 30	53	Average	Midsize Cars	Details
2021	Nissan	ALTIMA	2.5L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	28	39	53	Average	Midsize Cars	Details
2021	Nissan	Sentra SR	2.0L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	29	38	53	Above Average	Midsize Cars	Details
2021	Subaru	IMPREZA 4-Door	2.0L 4, auto CVT Awd	LEV-III SULEV30 / Tier 3 Bin 50	28	36	53	Average	Midsize Cars	Details
2021	Toyota	CAMRY LE/SE	2.5L 4, auto stk	LEV-III SULEV30 / Tier 3 Bin 30	28	39	53	Average	Midsize Cars	Details
2021	Toyota	Camry XLEXXSE	2.5L 4, auto stk	LEV-III SULEV30 / Tier 3 Bin 30	27	38	53	Average	Midsize Cars	Details
2021	Volvo	S90 AWD	Electric (Li-Ion) / 2.0L 4, auto stk Awd	LEV-III SULEV30 / Tier 3 Bin 30	1.97 / 28	2.00 / 31	53	Average	Midsize Cars	Details
2021	Audi	Q5	Electric (Li-Ion) / 2.0L 4, auto Awd	LEV-III SULEV30 / Tier 3 Bin 30	2.66 / 25	1.91 / 29	53	Above Average	Midsize SUVs	Details
2021	Toyota	SIENNA	2.5L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	36	36	53	Above Average	Minivans	Details
2021	Ford	MUSTANG MACH-E AWD EXTENDED	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	2.86	2.49	53	Average	Small Wagons	Details
2021	Kia	Soul Eco dynamics	2.0L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	29	35	53	Average	Small Wagons	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.

"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

"...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

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