Last updated: November 8, 2026 – By Diane Holcomb
November 2026 update: reconfirmed used/reman/new pricing and the comparison to a rebuild.
Replacing a car’s engine costs about $2,600 to $4,500 for a used (junkyard) engine installed on a midsize car, $4,000 to $6,500 for a remanufactured engine with a real warranty, and $4,000 to $10,000 or more for a new or crate engine. The swap itself takes roughly 10 to 25 hours of labor. The engine unit is a big share of the cost: a used engine runs about $1,500 to $4,500 before labor, a reman long block $3,500 to $8,000. So the core decision is used vs. reman vs. new – and, before any of that, whether a rebuild of your existing engine makes more sense. A used engine is cheapest but has unknown history and a short warranty; a reman gives known quality and a warranty; new/crate is the priciest. Whichever you choose, weigh the total against the car’s value.
Engine replacement is a major decision with several paths, and the smart move is comparing all of them – used, reman, new, and a rebuild – against your car’s worth. Let me cover the cost by engine source, the trade-offs, and the while-it’s-out savings.
What you’ll actually pay
Here’s the price picture by engine source. These are estimated ranges that vary by vehicle and shop.
| Engine source | Installed cost | Notes |
|---|---|---|
| Used / junkyard engine | $2,600–$4,500 | Cheapest; unknown history |
| Remanufactured (with warranty) | $4,000–$6,500 | Known quality, warranty |
| New / crate engine | $4,000–$10,000+ | Priciest, longest life |
| Labor (the swap) | ~10–25 hours | Varies by vehicle |
A used engine (pulled from another vehicle) is the lowest-cost option but comes with the previous car’s mileage and unknown maintenance history, usually with a short warranty. A remanufactured engine is rebuilt to factory spec on an assembly-line basis with a solid warranty and consistent quality. A new or crate engine is brand-new, the priciest but longest-lasting. All require the same heavy swap labor. Compare these against a rebuild of your existing engine; the engine guide covers the decision.
Shop Talk
When your engine is done, get four numbers and compare them, because the best value isn’t obvious. Price a used engine installed (cheapest, but you’re inheriting another car’s wear and usually only a 30-to-90-day warranty), a remanufactured engine installed (more, but built to spec with a real 1-to-3-year warranty), a new/crate engine (most, but brand-new), and a rebuild of your existing engine. These often land closer than you’d expect, and which wins depends on what’s available and your engine. A used engine is great value if you find a low-mileage one from a reputable yard; a reman is the sweet spot for most people wanting known quality and a warranty; a rebuild makes sense when your block is good. Then weigh the total against the car’s value – four or five figures on a low-value car rarely makes sense versus buying another vehicle, while on a newer car or a work truck you depend on, it often does. Two money tips: first, because the engine is already out, have the shop replace the “while-it’s-out” wear items at the same time – the rear main seal, the clutch (on a manual), the timing components if not part of the reman, and the water pump – since the big labor is already paid for and doing them later means paying it again. Second, on a used engine, ask about a warranty and whether the shop will warranty their labor if the used engine fails, so you’re not paying the swap labor twice.
Where Drivers Overpay
The main way to make a poor call here is not comparing the options. A used engine, a reman, a new/crate engine, and a rebuild of your existing engine can land close in total cost, and the best value depends on your specific engine and what’s available – so getting all the quotes prevents overpaying for one path when another was similar money with a better warranty. And the overarching check is the car’s value: four or five figures on a low-value vehicle rarely beats buying another car.
The real saving is doing the while-it’s-out parts together. Since the expensive labor is removing and reinstalling the engine, replacing the rear main seal, clutch, timing components, and water pump at the same time costs little extra and avoids paying that huge labor again when one of those fails soon after. On a used engine, also confirm the parts and labor warranty so a bad used engine doesn’t mean paying the swap twice. The pattern: compare used/reman/new/rebuild, weigh against the car’s value, bundle the while-it’s-out parts, and nail down the warranty.
The Real Number
Engine replacement runs $2,600 to $4,500 (used), $4,000 to $6,500 (reman with warranty), or $4,000 to $10,000+ (new/crate) installed. Compare all of these – plus a rebuild of your existing engine – since they land close and the best value varies. Weigh the total against the car’s worth, bundle the while-it’s-out parts (rear main seal, clutch, water pump) since the big labor is already paid, and confirm the warranty on a used engine.
Frequently Asked Questions
How much does it cost to replace an engine?
About $2,600 to $4,500 for a used engine installed, $4,000 to $6,500 for a remanufactured engine with a warranty, and $4,000 to $10,000 or more for a new or crate engine, on a typical midsize car. The swap takes roughly 10 to 25 hours of labor. The engine unit itself is a used engine $1,500 to $4,500 before labor, or a reman long block $3,500 to $8,000. These are estimates that vary by vehicle and shop. Compare these options against a rebuild of your existing engine, and weigh the total against the car’s value.
Should I replace my engine with a used, reman, or new one?
It depends on budget, how long you’ll keep the car, and what’s available. A used (junkyard) engine is cheapest ($2,600 to $4,500 installed) but carries another car’s mileage and usually a short warranty – great value if it’s low-mileage from a reputable yard. A remanufactured engine ($4,000 to $6,500) is rebuilt to spec with a solid warranty and consistent quality, the sweet spot for most people. A new or crate engine ($4,000 to $10,000+) is brand-new and longest-lasting but priciest. Get all three quotes plus a rebuild quote and compare, since the best value varies by situation.
Is it cheaper to replace or rebuild an engine?
They often land close, so compare both. A rebuild (machining and reusing your existing engine) runs about $2,500 to $4,500 for a standard car, while a used engine installed is $2,600 to $4,500 and a reman $4,000 to $6,500. A used engine can be cheapest if you find a good one; a rebuild makes sense when your block is sound; a reman gives known quality with a warranty. There’s no universal cheaper option – it depends on your engine’s condition and what’s available. Get quotes for a rebuild, used, and reman, and pick the best value for your situation.
Is replacing the engine worth it versus buying another car?
It comes down to the car’s value and your plans. Spending $3,000 to $6,000-plus on a car worth not much more rarely makes sense unless the rest of the vehicle is excellent and you’ll keep it for years; at that point another vehicle may be smarter money. But on a newer, higher-value, or well-maintained car, or a work truck you depend on, replacing the engine is often cheaper than buying a comparable replacement vehicle. So weigh the engine cost against the car’s worth, overall condition, and how long you’ll keep it. When the car is low-value and tired overall, replacing the whole vehicle may win.
What parts should I replace while the engine is out?
Since the expensive part of the job is removing and reinstalling the engine, it’s smart to replace wear items that are hard to reach otherwise while it’s out: the rear main seal (behind the engine), the clutch on a manual transmission, timing components if they aren’t included with a reman, and often the water pump and motor mounts. Doing these at the same time costs mostly just the parts, since the big labor is already being paid – versus paying that labor again later when one of them fails. Ask your shop which while-it’s-out items make sense for your vehicle.
Does a replacement engine come with a warranty?
It depends on the source. Remanufactured engines typically come with a solid warranty (often 1 to 3 years or a mileage limit), which is a big reason people choose reman. New or crate engines carry a manufacturer warranty. Used engines usually have only a short warranty (often 30 to 90 days) or none, since the history is unknown – so ask the yard and the shop about coverage. Also confirm whether the installing shop will warranty their labor if a used engine fails, so you’re not paying the swap labor twice. The warranty is part of the value comparison between options.
How long does an engine replacement take?
Typically about 10 to 25 hours of labor, which usually means a few days at the shop depending on their schedule, parts availability, and your vehicle’s complexity. Front-wheel-drive, AWD, and tightly packaged engine bays take longer than simple layouts. Sourcing the right engine (especially a good used one) can add time before the work starts. So plan to be without the car for several days to a week or more. The labor hours are a major part of the cost, which is why bundling the while-it’s-out parts into the same job is economical.
Sources
Price ranges verified against 2026 engine-replacement pricing in November 2026. Dollar amounts are estimates that vary widely by vehicle, engine source, and shop.
- RepairPal – engine replacement estimates
- ASE – National Institute for Automotive Service Excellence
- Kelley Blue Book – vehicle values