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	Lincoln	CONTINENTAL	3.7L 6, auto stk Awd	Tier 3 Bin 125	16	24	38	Average	Large Cars	Details
2020	Porsche	Panamera Turbo S e-Hybrid Executive	Electric (Li-Ion) / 4.0L 8, auto Awd	LEV-III ULEV125 / Tier 3 Bin 125	1.38 / 19	1.72 / 22	38	Below Average	Large Cars	Details
2020	Porsche	Panamera Turbo S e-Hybrid ST	Electric (Li-Ion) / 4.0L 8, auto Awd	LEV-III ULEV125 / Tier 3 Bin 125	1.38 / 19	1.72 / 22	38	Below Average	Large Cars	Details
2020	Porsche	Panamera Turbo ST	4.0L 8, auto Awd [P]	LEV-III ULEV125 / Tier 3 Bin 125	18	23	38	Average	Large Cars	Details
2020	Genesis	G80	3.3L 6, auto stk Awd [P]	LEV-III ULEV125 / Tier 3 Bin 125	17	24	38	Average	Large Cars	Details
2020	Genesis	G90	5.0L 8, auto stk [P]	LEV-III ULEV70 / Tier 3 Bin 70	16	24	37	Below Average	Large Cars	Details
2020	Porsche	Panamera GTS	4.0L 8, auto Awd [P]	LEV-III ULEV125 / Tier 3 Bin 125	16	24	37	Below Average	Large Cars	Details
2020	Lincoln	CONTINENTAL	3.0L 6, auto stk Awd	LEV-III ULEV70 / Tier 3 Bin 70	16	24	37	Below Average	Large Cars	Details
2020	Maserati	QUATTROPORTE S	3.0L 6, auto [P]	LEV-III LEV160 / Tier 3 Bin 160	17	24	37	Below Average	Large Cars	Details
2020	Mercedes-Benz	S560 4MATIC Maybach	4.0L 8, auto 4wd [P]	LEV-III ULEV70 / Tier 3 Bin 70	16	25	37	Below Average	Large Cars	Details
2020	Genesis	G80	5.0L 8, auto stk Awd [P]	LEV-III ULEV70 / Tier 3 Bin 70	15	23	36	Below Average	Large Cars	Details
2020	Genesis	G90	5.0L 8, auto stk Awd [P]	LEV-III ULEV70 / Tier 3 Bin 70	15	23	36	Below 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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