Glossary

2-Speed Rear Axle:
The rear axle is equipped with two sets of gears. The additional gear ratio compliments the transmission's ratios to improve drivability.

4-Spring Rear Suspension:
Rear suspension comprised of metal springs. Opposite of Air Ride.

Air Ride Cab:
A truck cab that is mounted on air bags.

Air Ride Rear Suspension:
Rear suspension comprised of air bags. Opposite of 4-Spring.

Auction Values:
NADA’s Auction values represent recent price action for a vehicle at wholesale auction and are available for model years 2005 and later, as volumes allow. They are defined as follows:

  • NADA Low Auction values represent vehicles with below-average auction prices. Vehicles in this category may be negatively impacted by short-term oversupply and / or require substantial reconditioning.
  • NADA Average Auction values reflect the average auction price.
  • NADA High Auction values represent vehicles with higher-than-average auction market prices. Vehicles in this category may be positively impacted by a short-term shortage in supply and / or in excellent condition with attributes or option content that would improve demand.

BBC:
Distance from the bumper to the back of the cab, usually in inches.

Body Type:
The popular name for the bodystyle and trim (Coupe, Convertible, Utility etc.).

Cabover:
"Flat-nose" truck that places the engine and driver over the front axle. Opposite of a Conventional.

Condo:
Raised Roof sleeper.

Conventional:
Truck with a traditional hood wherein the driver and engine are located behind the front axle. Opposite of a Cabover.

Engine Brake:
Commonly called a "Jake Brake" or "Retarder." Manipulates the engine's valvetrain in order to create a braking effect to assist the wheel brakes.

Grey Market Cars:
An unknown number of "Grey Market" vehicles enter the marketplace each year. "Grey Market" is a term often used to describe a vehicle that was not manufactured for sale or trade in the United States or enters the United States via channels other than factory authorized dealers. Many "Grey Market" vehicles may not fully meet U.S. federal standards. This classification might result in a substantial lessening of the vehicle’s market value. This guide makes no attempt to value "Grey Market" vehicles.

Jake Brake:
See Engine Brake.

Model Number:
A portion of the Vehicle Identification Number (VIN) that identifies the make and model of a vehicle.

Model Year Indicator:
The 10th position in a vehicle's Vehicle Identification Number (VIN). Since 1981, this digit identifies the year of the vehicle.

MSRP:
The base Manufacturers Suggested Retail Price at the time of introduction, including standard equipment only and excludes taxes, transportation and destination.

Pusher Axle:
Unpowered third axle located in front of the drive axles. Assists in carrying weight.

Retarder:
See Engine Brake.

Single Axle:
One rear axle is installed on the truck. Opposite of Tandem Axle.

Tag Axle:
Unpowered third axle located behind the drive axles. Assists in carrying weight.

Tandem Axle:
Two rear axles are installed on the truck. Opposite of Single Axle.

Vehicle Condition:
There are a number of cosmetic, mechanical and maintenance factors that go into determining the condition of a used vehicle. These are the major factors NADA’s Editors believe distinguish a vehicle’s condition in the following categories:
 

Rough:
Significant mechanical defects requiring repairs in order to restore reasonable running condition; paint, body and wheel surfaces have considerable damage to their finish, which may include dull, faded or oxidized paint, small to medium size dents, frame damage, rust, or obvious signs of previous repairs; interior reflects above average wear, with inoperable equipment, damaged or missing trim, and heavily soiled /permanent imperfections on the headliner, carpet, and upholstery; may have a branded title; vehicle will need substantial reconditioning and repair to be made ready for resale; some existing damage may be difficult to restore.

Average:
Mechanically sound but may require some repairs/servicing to pass all necessary inspections; paint, body and wheel surfaces have moderate imperfections and an average finish which can be improved with restorative repair; interior reflects some soiling and wear in relation to vehicle age, with all equipment operable or requiring minimal effort to make operable; clean title history; vehicle will need a fair degree of reconditioning to be made ready for resale.

Clean:
No mechanical defects and passes all necessary inspections with ease; paint, body and wheels may have minor surface scratching with a high gloss finish; interior reflects minimal soiling and wear, with all equipment in complete working order; vehicle has a clean title history; vehicle will need minimal reconditioning to be made ready for resale.


Vehicle Values:
The used vehicle values are developed by NADA’s Editors, based on many sources of information, including wholesale and retail transaction data.

Auction:
Auction values represent recent price action for a vehicle at wholesale auction and are available for model years 2003 and later, as volume allows. They are defined as follows:

  • NADA Low Auction values represent vehicles with below average auction prices. Vehicles in this category may be negatively impacted by short-term oversupply and/or require substantial reconditioning.
  • NADA Average Auction values reflect the average auction price.
  • NADA High Auction values represent vehicles with higher than average auction market prices. Vehicles in this category may be positively impacted by a short-term shortage in supply and / or in excellent condition with attributes or option content that would improve demand.

Clean Loan:
NADA’s suggested amount of credit that may be obtained on a vehicle based on the Clean Trade-In value. Providers of vehicle financing determine the amount of credit they are willing to extend on a vehicle.

Clean Retail:
NADA’s estimated Clean Retail value for a vehicle in clean condition and mileage falling within NADA’s assumed mileage range.

Trade-In:
NADA’s estimated Trade-In value for a vehicle in rough, average or clean condition (see vehicle condition definitions) and mileage falling within NADA’s assumed mileage range.

Wet Kit:
Hydraulic components that enable a truck to operate a trailer or body's moveable equipment, such as a mixer or dump.

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