Table of Contents
Has your engine given out, leaving you wondering what to do next? Or whether you are trying to decide whether to go with a rebuilt engine or invest in a brand new one? It is essential to understand the key difference between the rebuilt, remanufactured and new engines. In this guide we’ll dive into what a rebuilt engine really is and how it compares to other options and let you choose the best option suitable for you.
What Is a Rebuilt Engine?
Is your engine giving out and needs a fresh start? Or is your engine disassembled or worn out or needs a thorough inspection that’s where a rebuilt engine steps in. A rebuilt engine is an existing engine that is reconditioned before being carefully reassembled to restore to work in a good condition. Unlike a brand-new engine, a rebuilt engine uses many of the original components that still in good working condition, but includes new parts such as pistons, gaskets and bearing. The main function of it is to bring the engines back to the reliable and functional state often at budget-friendly cost.
What Is a New (Crate) Engine?
A new crate engine is a fully assembled engine that has been never-before-used, that comes in a packaged crate and is ready for installation. It includes all brand new components and is built to meet factory specification making it a popular choice for those replacing a failed engine. You can buy all new engines from the OEM (Original Equipment Manufacturer), that ensure the exact match for your vehicle. These engines are mostly expensive and can cost around $2,500 – $7,500 depending on the make and models.
Key Differences Between Rebuilt and New Engines
| Feature | Rebuilt Engine | New Engine |
| Cost | Lower | Higher |
| Warranty | Shorter (6–12 months) | Longer (3–5 years) |
| Longevity | 100,000–150,000 miles | 150,000–200,000+ miles |
| Parts Used | Mix of old and new components | All brand-new components |
PROs:
- Reliability: These engines are trustworthy as it contains new or refurbished parts.
- Longer Lifespan: With proper maintenance and care these engines can last as long as the new one.
- Performance: These engines offer seamless acceleration and are fuel-efficient.
- Warranty Guaranteed: Most engines come with warranty offering extra protection for long term durability.
CONs
- Higher Cost: These engines are expensive and cost high because of the labor and replacement parts involved.
- Availability: It is challenging to find a quality rebuilt engines for certain make and models.
- The quality of the rebuilt engine depends on the skills of the mechanic or the manufacturers from where the engine is purchased.
Key Differences Between Rebuilt vs New Engine Explained
| Factor | Rebuilt Engine | Engine Replacement |
| Best For | Vehicles in good condition and relatively modern | Vehicles with severe engine damage or very high mileage |
| Cost | More cost-effective | More expensive |
| Common Issues Addressed | Tapping or knocking sounds, worn components | Catastrophic engine failure, beyond repair |
| Engine Condition | Engine is repairable and rebuildable. | Engine is non-functional or not worth rebuilding |
| Process | Engine is disassembled, worn parts replaced, and reassembled | Entire engine is swapped with a new or refurbished unit |
| Mileage Consideration | Suitable if the vehicle hasn’t reached its maximum mileage | Better if the engine has exceeded its useful life |
| Goal | Extend the life of your current engine | Restore full performance with a fresh or factory-spec engine |
| Cost-Effectiveness | Budget-friendly choice for long-term use | Worth it if rebuilding doesn’t guarantee reliability |
Is a Rebuilt Engine Worth It?
Indeed, it’s worth having your engine rebuilt, especially if your vehicle is in a good condition. To restore the performance of your car rebuilding an engine requires disassembling it, swapping the worn-out or damaged parts and reassembling it to restore performance. This procedure can prolong the life of your car.
Final Thoughts
Deciding between a rebuilt engine and a brand new one is not an easy job. The decision depends on the condition of your vehicle, budget and long-term goals. Choosing a rebuilt engine can be a wise choice and can be more cost effective option. Whereas on the other hand, opting for a new engine can offer you unmatched reliability and longevity. In the end, if you want an affordable way to get your car running again and still keep it reliable, a rebuilt engine is a good choice. But if you’re looking for the best performance and long-lasting peace of mind, a brand-new engine may be worth the extra cost.
Frequently Asked Questions
How long will a rebuilt engine last?
A rebuilt engine can last 100,000 to 150,000 miles or more if properly rebuilt and well-maintained.
Is it cheaper to rebuild or buy a new engine?
Rebuilding an engine is usually more affordable than buying a new one, often costing 30–50% less. It’s a cost-effective option if the existing engine block is still in good shape.
What is the warranty on rebuilt engines?
Rebuilt engines typically come with a warranty of 3 months or 12,000 miles, though some shops may offer longer coverage.
Is a remanufactured engine better than a rebuilt engine?
A remanufactured engine is often considered better than a rebuilt one due to its stricter restoration process.