Car buying glossary

Plain-English definitions of every term a car shopper, leaser, or EV buyer encounters — sourced from federal agencies (NHTSA, EPA) and industry standards.

Annual Percentage Rate(APR)

The yearly cost of borrowing, including interest and most fees, expressed as a percentage. APR is the single most useful number for comparing auto loans across lenders.

Manufacturer's Suggested Retail Price(MSRP)

The price the automaker recommends a dealer charge for a new vehicle. Actual transaction prices can be above (markup) or below (discount) MSRP depending on supply.

Certified Pre-Owned(CPO)

A used vehicle that has passed a manufacturer-defined inspection and carries a manufacturer-backed extended warranty. CPO programs differ meaningfully by brand.

Miles Per Gallon equivalent(MPGe)

An EPA measure that converts the energy in a kilowatt-hour of electricity to the energy in a gallon of gasoline, letting EVs and gas vehicles be compared on the same scale.

Loan-to-Value(LTV)

The ratio of an auto loan's balance to the vehicle's market value. High LTVs (over 120%) raise repossession risk and disqualify some refinance offers.

Guaranteed Asset Protection(GAP)

Insurance that pays the difference between what you owe on an auto loan and the vehicle's actual cash value if the car is totaled or stolen.

Total Cost of Ownership(TCO)

The all-in cost of owning a vehicle over a period — purchase price minus resale value, plus fuel/electricity, insurance, financing, maintenance, and repairs.

Kelley Blue Book(KBB)

A widely cited third-party vehicle valuation provider used by consumers and dealers to benchmark trade-in, private-party, and retail prices.

Vehicle Identification Number(VIN)

A 17-character code that uniquely identifies a vehicle. Used to pull title history, recalls (NHTSA), warranty status, and accident records.

National Highway Traffic Safety Administration(NHTSA)

U.S. federal agency that publishes vehicle safety ratings, crash test results, and the authoritative open recall database (nhtsa.gov/recalls).

Environmental Protection Agency(EPA)

U.S. federal agency that publishes the official fuel-economy (MPG) and EV range numbers shown on every new vehicle's window sticker.

Money Factor

The lease equivalent of an interest rate, expressed as a small decimal (e.g., 0.0025). Multiply by 2,400 to approximate the equivalent APR.

Residual Value

The predicted value of a leased vehicle at the end of the lease term. Higher residual = lower monthly payment, because you're financing the gap between MSRP and residual.

Disposition Fee

A flat fee (typically $350–$500) charged at lease-end if you return the vehicle instead of buying it. Often waived if you lease or finance another vehicle from the same brand.

Out-the-Door Price(OTD)

The total cash price including the vehicle, taxes, registration, title, and all dealer fees. Always ask for an OTD quote — it's the only number that lets you compare dealers apples-to-apples.