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	Dodge	Charger SRT Widebody	6.2L 8, auto [P]	LEV-III LEV160 / Tier 3 Bin 160	12	21	30	Inferior	Large Cars	Details
2021	Rolls-Royce	Ghost	6.7L 12, auto stk Awd [P]	LEV-III ULEV125 / Tier 3 Bin 125	12	19	28	Inferior	Large Cars	Details
2021	Rolls-Royce	Ghost EWB	6.7L 12, auto stk Awd [P]	LEV-III ULEV125 / Tier 3 Bin 125	12	19	28	Inferior	Large Cars	Details
2021	Rolls-Royce	Phantom	6.7L 12, auto stk [P]	LEV-III ULEV125 / Tier 3 Bin 125	12	20	28	Inferior	Large Cars	Details
2021	Rolls-Royce	Phantom EWB	6.7L 12, auto stk [P]	LEV-III ULEV125 / Tier 3 Bin 125	12	20	28	Inferior	Large Cars	Details
2020	Tesla	Model S Long Range	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	3.41	3.18	51	Superior	Large Cars	Details
2020	Tesla	Model S Standard Range	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	3.37	3.11	51	Superior	Large Cars	Details
2020	Tesla	Model S Performance (19" Wheels)	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	3.09	3.07	50	Superior	Large Cars	Details
2020	Tesla	Model S Performance (21" Wheels)	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	2.91	2.84	49	Superior	Large Cars	Details
2020	BMW	X1 sDrive28i	2.0L 4, auto stk [P]	LEV-III SULEV30 / Tier 3 Bin 30	24	33	48	Above Average	Large Cars	Details
2020	BMW	X2 sDrive28i	2.0L 4, auto stk [P]	LEV-III SULEV30 / Tier 3 Bin 30	24	32	48	Above Average	Large Cars	Details
2020	BMW	X2 xDrive28i	2.0L 4, auto stk Awd [P]	LEV-III SULEV30 / Tier 3 Bin 30	24	31	48	Above Average	Large 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.

"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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