The short answer
Replacing a car engine typically costs $6,300 to $12,900 all-in for a new engine, including $2,000 to $4,000 in labor. A rebuilt or remanufactured engine is usually cheaper at $3,500 to $6,000, while a used or salvage engine costs less but carries more risk. Once the repair tops half the car's value, replacing the car often makes more sense.
What is the average cost to replace a car engine?
A full engine replacement typically costs $6,300 to $12,900 installed. The engine itself runs about $4,000 for a four-cylinder up to $7,000 for a V8, and labor adds $2,000 to $4,000 for the 15 to 25 hours the swap takes. Engine size, vehicle layout, and whether the unit is new, rebuilt, or used drive the spread.
| Engine type / source | Engine cost | Typical all-in |
|---|---|---|
| New 4-cylinder | ~$4,000 | ~$6,300–$8,000 |
| New V6 | ~$5,000–$6,000 | ~$7,500–$10,500 |
| New V8 | ~$7,000 | ~$9,500–$12,900 |
| Rebuilt / remanufactured | ~$2,500–$4,500 | ~$3,500–$6,000 |
| Used / salvage | ~$1,000–$3,000 | ~$2,500–$5,000 |
The all-in figures draw on J.D. Power. Because an engine is among the most expensive repairs a car can need, it's worth weighing against the price of a different vehicle and other big-ticket jobs like a catalytic converter or a transmission failure.
Is it cheaper to rebuild or replace a car engine?
Rebuilding is usually cheaper. A rebuilt or remanufactured engine runs about $3,500 to $6,000 installed, versus $6,300 to $12,900 for a brand-new engine. A used or salvage engine can cost even less, but it carries the most risk because its prior mileage, maintenance, and condition are largely unknown when you buy it.
- New engine: highest cost ($6,300–$12,900), longest warranty, zero prior wear — the safest but priciest path.
- Remanufactured: rebuilt to factory spec with worn parts replaced; $3,500–$6,000 and typically backed by a warranty.
- Rebuilt: the original block reconditioned with new gaskets, seals, and worn components; cost varies with what's replaced.
- Used / salvage: cheapest up front, but mileage and history are uncertain and warranties are short or absent.
For how remanufactured and rebuilt units differ and when each makes sense, see Kelley Blue Book. A reputable shop should warranty the rebuild and the labor together.
How much is labor for an engine swap?
Labor for an engine swap runs about $2,000 to $4,000. The job takes 15 to 25 hours at typical shop rates of $100 to $150 per hour, because the engine must be disconnected from the transmission, cooling, fuel, electrical, and exhaust systems and lifted out. Complex layouts and all-wheel drive push both the hours and the bill higher.
- Shop rate: $100–$150 per hour at most independent shops; dealers often charge more.
- Job time: 15–25 hours for a typical swap; longer for tight engine bays or AWD.
- What adds hours: transverse (sideways) engines, turbochargers, and packed under-hood layouts.
- Extras: new mounts, gaskets, fluids, belts, and a timing component refresh are often done at the same time.
Labor estimates above reflect the 15-to-25-hour range cited by J.D. Power. Always get a written estimate that itemizes parts, labor hours, and warranty before authorizing the work.
When is it not worth replacing a car engine?
Replacing the engine usually isn't worth it once the repair tops about 50% of the car's current market value. If a $7,000 engine job goes into a car worth $6,000, buying a different vehicle generally makes more economic sense. Weigh the car's condition, remaining lifespan, and what a comparable replacement would cost before committing.
- The 50% rule: when the repair exceeds roughly half the car's value, replacement of the car is often the better call.
- Rest of the car: a sound body, good transmission, and clean records can justify the engine in an otherwise solid vehicle.
- Sentimental or rare cars: the math bends when the vehicle is hard to replace or has personal value.
- Cost to replace the car: compare the engine bill against a used car's price and its own repair risk.
A commonly cited rule of thumb — echoed by sources like Kelley Blue Book and J.D. Power — is to replace rather than repair once the repair tops about half the car's value. If you're shopping a replacement, the cheapest cars to maintain can lower the next engine's risk.
Does car insurance cover engine replacement?
No. Standard car insurance does not cover engine replacement caused by wear or mechanical failure. It pays only when the damage comes from a covered event — a collision under collision coverage, or with comprehensive coverage, certain non-collision incidents like flooding, fire, or falling objects. Worn-out or neglected engines are never a covered claim.
| Cause of engine damage | Typically covered? |
|---|---|
| Wear or mechanical failure | No — not covered |
| Collision damage | Yes — with collision coverage |
| Flood, fire, falling object | Yes — with comprehensive coverage |
| Skipped maintenance / neglect | No — not covered |
For wear-and-failure costs, a powertrain warranty or an extended service contract is what may apply, not your auto policy. If the engine failed after a covered accident, document the damage and file the claim before any repair. For the warning lights that often precede engine trouble, see what the check engine light means.
Frequently asked questions
What is the average cost to replace a car engine?
Replacing a car engine typically costs $6,300 to $12,900 all-in for a new engine: the engine itself runs about $4,000 for a four-cylinder to $7,000 for a V8, plus $2,000 to $4,000 in labor for 15 to 25 hours of work.
Is it cheaper to rebuild or replace a car engine?
A rebuilt or remanufactured engine is usually cheaper at $3,500 to $6,000, versus $6,300 to $12,900 for a brand-new engine installed. A used or salvage engine can cost even less but carries the most risk because its history and mileage are uncertain.
How much is labor for an engine swap?
Labor for an engine swap runs about $2,000 to $4,000, because the job takes 15 to 25 hours at typical shop rates of $100 to $150 per hour. Complex layouts, all-wheel drive, and transverse engines push the hours and the bill toward the top of that range.
When is it not worth replacing a car engine?
Replacing the engine usually isn't worth it once the repair exceeds about 50 percent of the car's current market value. If a $7,000 engine job goes into a car worth $6,000, buying a different vehicle generally makes more economic sense than the repair.
Does car insurance cover engine replacement?
Standard car insurance does not cover engine replacement from wear or mechanical failure. It only pays when the damage comes from a covered event, such as a collision or, with comprehensive coverage, certain non-collision incidents like flooding or fire.
Sources
CarsLens is editorial guidance, not individualized advice. This page draws on J.D. Power and Kelley Blue Book.