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Is it worth replacing an engine?

Replacing an engine can be a significant investment, but it may be worth considering in certain situations. The decision to replace an engine depends on various factors, including the age and condition of the vehicle, the cost of the repair, and the overall value of the car.


When to Consider Replacing an Engine


There are several scenarios where replacing an engine may be the best course of action:



  • Extensive Damage or Wear: If the engine in your vehicle has suffered significant damage, such as a blown head gasket, seized bearings, or extensive wear and tear, replacing the engine may be the most cost-effective solution. Attempting to repair a severely damaged engine can often be more expensive than replacing it.

  • High Mileage: Engines with very high mileage (typically over 150,000 miles) may be nearing the end of their lifespan. Replacing the engine can extend the life of the vehicle and potentially save you money in the long run compared to the cost of frequent repairs.

  • Improved Performance: In some cases, replacing an engine with a newer, more powerful model can improve the vehicle's performance, fuel efficiency, and overall driving experience.


It's important to weigh the cost of the engine replacement against the value of the vehicle and the expected lifespan of the new engine. If the cost of the replacement exceeds the value of the car, it may not be worth the investment.


Factors to Consider


When deciding whether to replace an engine, consider the following factors:



  • Cost of the Replacement: Obtain quotes from multiple mechanics or dealerships to understand the full cost of the engine replacement, including labor and any additional parts that may be needed.

  • Value of the Vehicle: Assess the current market value of your vehicle to determine if the cost of the engine replacement is justified.

  • Remaining Useful Life: Consider the age and overall condition of the vehicle to estimate how much longer you can expect to use the car after the engine replacement.

  • Warranty Coverage: Check if the engine replacement is covered by any existing warranties or extended service plans, which could help offset the cost.


Ultimately, the decision to replace an engine should be based on a careful evaluation of the costs, benefits, and long-term viability of the vehicle. Consulting with a trusted mechanic can also provide valuable insights to help you make an informed decision.

Is putting a new engine in a car worth it?


Yes, generally speaking, if a car gets a brand new engine, it can be worth more. A new engine can enhance the car's performance, reliability, and lifespan, which can increase its resale value. However, the overall impact on value depends on several factors, including:



Does a new engine make a car like new?


  • Performance Improvement: A new engine can enhance the car's performance, providing better acceleration, fuel efficiency, and reliability compared to a worn-out engine.
  • Increased Longevity: A new engine can significantly extend the lifespan of the vehicle, especially if the rest of the car is in good condition.



Does a car last longer if you replace engine?


For example, let's say a car received a brand-new engine at 40,000 miles. In that case, the engine will have only traveled 25,000 miles when the odometer reaches 65,000 miles. That means the car may last a little longer than a car with its original engine since the newer engine hasn't seen as much use.



Is a car reliable after engine replacement?


No, a car with a new engine isn't the same as getting a new car. While a new engine can go a long way in extending your car's lifespan, there are other parts to consider, including the frame, suspension, complex electrical system, and more. A new engine may not resolve all issues with a car.



Is it cheaper to rebuild or replace an engine?


Engine Replacement Cost
Getting a rebuilt engine for a car is usually the least expensive option, with costs usually in the $2,500-$5,000 range. A remanufactured engine often costs about $4,000 to $7,000 for a mainstream vehicle. New replacement engines are from the automaker's plants.



Does replacing an engine reset mileage?


Does a new engine reset mileage? No, replacing your car's engine won't reset its mileage. The odometer is connected to the front wheel hub rather than the engine, and any changes made to the engine, even as far as replacing it - won't affect the odometer. You can only reset the mileage by tampering with the odometer.



What are the cons of replacing the engine?


Engine replacements can significantly extend the lifespan of a vehicle and restore its performance, but they can also introduce some new challenges. The vehicle feels weaker, with reduced acceleration and speed. Improper timing, air/fuel mixture issues, sensor malfunctions, or incorrect parts.



How long will a car last after engine replacement?


So what can you expect when you're replacing it with a rebuilt engine? Though a rebuilt engine may not always have the same lifespan as the original, it can last for upwards of 100,000 miles. This can double the overall lifespan of your vehicle, and with regular maintenance, you can help it last even longer.



Does replacing the engine change the mileage?


Does a new engine reset mileage? No, replacing your car's engine won't reset its mileage. The odometer is connected to the front wheel hub rather than the engine, and any changes made to the engine, even as far as replacing it - won't affect the odometer. You can only reset the mileage by tampering with the odometer.



Will insurance cover a blown engine?


Whether it's routine maintenance, a mechanical failure or a blown engine, car insurance will most likely not cover the costs of repairing or replacing your vehicle. Hopefully, your car keeps running smoothly, but plan to pay out of pocket for routine maintenance or for a mechanic if your car breaks down.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.