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
2018	Tesla	Model S 75kWh	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	2.89	2.95	60	Superior	Large Cars	Details
2018	Tesla	Model S P100D	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	2.74	3.1	60	Superior	Large Cars	Details
2018	Tesla	Model X 75D	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	2.7	2.83	60	Superior	Large SUVs	Details
2018	Kia	Optima Plug-in Hybrid	Electric (Li-Ion) / 2.0L 4, auto	LEV-III SULEV30 / Tier 3 Bin 30	3.04 / 38	3.08 / 43	60	Superior	Midsize Cars	Details
2018	Kia	Niro	1.6L 4, auto	LEV-III SULEV30 / Tier 3 Bin 30	51	46	60	Above Average	Small Wagons	Details
2018	Mitsubishi	MIRAGE	1.2L 3, auto CVT	LEV-III ULEV70 / Tier 3 Bin 70	37	43	59	Superior	Compact Cars	Details
2018	Toyota	CAMRY HYBRID XLE/SE	2.5L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	44	49	59	Above Average	Midsize Cars	Details
2018	Ford	FUSION Energi Plug-in Hybrid	Electric (Li-Ion) / 2.0L 4, auto CVT	LEV-III SULEV30 / Tier 3 Bin 30	3.11 / 43	2.72 / 41	59	Superior	Midsize Cars	Details
2018	Mitsubishi	MIRAGE	1.2L 3, auto CVT	LEV-III ULEV70 / Tier 3 Bin 70	37	43	58	Superior	Compact Cars	Details
2018	Tesla	Model X 100D	Electric (Li-Ion)	Tier 3 Bin 0 / ZEV	2.55	2.63	58	Superior	Large SUVs	Details
2018	Chevrolet	MALIBU HYBRID	1.8L 4, auto CVT	Tier 3 Transitional Bin 110	49	43	58	Above Average	Midsize Cars	Details
2018	Kia	Niro Touring	1.6L 4, auto	LEV-III SULEV30 / Tier 3 Bin 30	46	40	58	Above 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.

"...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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