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EPA Size Class

The size class for cars is based on interior passenger and cargo volumes as described below. The size class for trucks is defined by the gross vehicle weight rating (GVWR), which is the weight of the vehicle and its carrying capacity. Fuel economy regulations do not apply to heavy-duty vehicles, so they are not tested.

Vehicle Size Classes Used in the Fuel Economy Guide
Class Passenger & Cargo Volume (Cu. Ft.)
Two-Seaters Any
(cars designed to seat only two adults)
Minicompact <85
Subcompact 85 to 99
Compact 100 to 109
Mid-Size 110 to 119
Large 120 or more
Station Wagons
Small <130
Mid-Size 130 to 159
Large 160 or more
Class Gross Vehicle Weight Rating (GVWR)*
Pickup Trucks Through Model Year 2007 Beginning Model Year 2008
Small <4,500 lbs. <6,000 lbs.
Standard 4,500 to 8,500 lbs. 6,000 to 8,500 lbs.
Vans Through 2010 Beginning 2011
Passenger <8,500 lbs. <10,000 lbs.
Cargo <8,500 lbs.
Minivans <8,500 lbs.
Sport Utility Vehicles (SUVs) Through 2010 Beginning 2011
<8,500 lbs. <10,000 lbs.
Special Purpose Vehicles Through 2010 Beginning 2011
<8,500 lbs. <8,500 lbs.
or <10,000 lbs.,
depending on configuration

*Gross Vehicle Weight Rating (GVWR) is calculated as truck weight plus carrying capacity.

Fuel Economics

Fuel cost estimates assume you will drive 15,000 miles each year, 45% of which will be under highway driving conditions (steady speeds with little or no stopping), 55% in city driving (low speeds with lots of stopping).

Cost to Refuel

Cost to completely refuel the vehicle when the tank (or battery) is 90% empty.

Distance on a Full Tank/Charge

The distance the vehicle can go on a full tank of fuel or on a full battery charge down to 90% empty.

Fuel Capacity

The amount of fuel the vehicle can hold. For a vehicle using gasoline or another liquid fuel, this is the size of the fuel tank in gallons or liters. For electric vehicles, this is the battery capacity in kilowatt-hours. Plug-in hybrids have a capacity for both liquid fuel and electricity.

Engine and Transmission Descriptors

Engine Descriptors
Code Description
CNG Compressed natural gas
DSL Diesel
DVVT Dual variable valve timing
DOHC Double overhead camshaft
E85 A Mixture of 85% ethanol and 15% gasoline
FFS Feedback fuel system
FFV Flexible-fuel vehicle. A vehicle that can run on a mixture of two fuel types (e.g., gasoline and ethanol)
GM-BUICK Engine produced by GM-Buick Motor Division
GM-CHEV Engine produced by GM-Chevrolet Motor Division
GM-OLDS Engine produced by GM-Oldsmobile Motor Division
GM-PONT Engine produced by GM-Pontiac Motor Division
GUZZLER Vehicle subject to gas guzzler tax due to low fuel economy (tax paid by manufacturer, not buyer)
HP Horsepower
M-ENG One of two 5.8L Ford truck engines
MPFI, MPI Multipoint fuel injection
NO-CAT No catalytic converter
OHC Overhead camshaft
OHV Overhead valves
POLICE Police vehicle
RNG140/220 Driving range (on a full tank of fuel); example: RNG140/220 = 140 miles on onel fuel and 220 miles on the other
RNG380 Driving range (on a full tank of fuel); example: RNG380 = 380 miles
ROTARY Rotary engine
S-CHARGE, SC Supercharger
SMG Sequential manual gearbox
SOHC Single overhead camshaft
SPFI Single-point fuel injection
TURBO, TRBO, TC Turbocharger
VARIABLE Variable displacement engine
VIS Variable induction system
VTEC Variable valve timing and lift electronic control
VCM Variable cylinder management
W-END One of two 5.8L Ford truck engines
16-VALVE 16 valves
305 305 cubic inch displacement engine
307 307 cubic inch displacement engine
Transmission Descriptors
Code Description
CLKUP Computer-controlled continuously variable lockup
CMODE Computer-controlled multimode transmission
EMS Engine management system
LONG RATIO Long ratio gearbox
nLKUP User-selectable lockup with n (2 through 9) lockup ranges
nMODE Multimode, user-selectable transmission. n = number of gear range (2 through 9)
SIL Shift indicator light on instrument panel
VLKUP Continuously variable, user-selectable lockup
VMODE User-selectable continuously variable transmission