Problem: The RX-8 has the unique rotary style engine, and this version of the rotary engine has proven to be highly unreliable, particularly after 60,000 miles. Warranty companies say that Mazda have unofficially said that these engines do become unreliable and susceptible to problems at over 60,000 miles.

Similarly, What year RX8 is the best one?

As the RX-8 didn’t change much over its seven year run, we’d recommend going with a 2010 or newer model due to the improvements in the engine that greatly reduce roughness, flooding and most importantly, oil consumption. If you’re on a budget and looking at an older model, try to find a low-mileage one-owner car.

Additionally, Why is the RX8 engine bad? The problem is that there are so many different ways for an engine to fail: Excessive carbon buildup accelerates seal wear, causing compression loss (particularly a problem in automatic RX-8s) Excessive carbon buildup unseats the seals, causing compression loss (particularly a problem in automatic RX-8s)

Can you make an RX8 reliable?

Replace ignition coils and plugs

Another step to take in making the Mazda RX-8 more reliable is to replace the ignition coils, plugs, and wires. This is a pretty simple process and a typical maintenance item in most cars, however, it’s more crucial if you’re planning to make the RX-8 last longer.

Why are RX8 so cheap?

Poor Fuel Economy & Daily Drivability

Another reason why the RX8 is cheap to buy now is because many are put off by the poor fuel economy of the car. Rotary engines might be small in size (and produce substantial power relative to that size) but they have a tendency to be thirsty.

What should I look for in a RX8?


7 Things You Need To Know Before Buying A Mazda RX-8

  1. They must be kept above 3000rpm. …
  2. Passengers over six-feet can sit in the rear.
  3. The engine floods easily. …
  4. Engine life can be short. …
  5. Apex seals are the first part to fail. …
  6. Be prepared to replace coils often. …
  7. Winning Blue is arguably the best colour choice.

How long does a renesis engine last?

There are various answers and speculations as to how long a typical RENESIS engine can last for. Just like any other engine, taking the time to care for it properly will make it last longer than usual, however, that could mean 80,000 miles or less.

What is the problem with Mazda RX-8?

RX8 Common Issues

Hot start problems (signs of poor compression). Growling noise and loss of power (sticking SSV or tune valves). Engine Management Light flashing whilst driving (real time detection of engine misfire). Rattling Exhaust (catalyst damaged with ceramic in rear section of exhaust).

How do I know if my RX8 engine is bad?

A rotary engine with a worn apex seal tends to run underpowered due to poor compression.




Poor Compression Symptoms Associated to Faulty Apex Seals

  1. Hard cold starts. …
  2. Idling or cutting off problems. …
  3. Frequent misfiring. …
  4. Noticeable reduction in power.

Is RX7 faster than RX8?

RX7 is alot faster than RX8, my friend has one. Both cars have bad fuel economy and drinks oil. In the RX7 I understand why it has bad mpg and drinks oil, but in the RX8 I really really dont understand why the mpg is so low in a pretty slow car like the RX8. It’s not -that- much faster.

Are rx8 expensive to maintain?

The annual maintenance cost of a Mazda RX-8 is $517. Repair and maintenance costs vary depending on age, mileage, location and shop.

Why are rotary engines so unreliable?

Rotary engines have a low thermal efficiency as a result of a long combustion chamber and unburnt fuel making it to the exhaust. They also have problems with rotor sealing as a result of uneven temperatures in the combustion chamber since combustion only occurs in one portion of the engine.

Why do RX8 engines fail?

The problem is that there are so many different ways for an engine to fail: Excessive carbon buildup accelerates seal wear, causing compression loss (particularly a problem in automatic RX-8s) … Excessive carbon buildup causes the seals to stick, causing compression loss (particularly a problem in automatic RX-8s)

How many miles can a rotary engine go?

Rebuilding a Wankel at 80,000-100,000 miles is typical, and earlier than most piston engine need such exhaustive work.

Are Mazda RX8 expensive to maintain?

Mazda RX-8 Repair: Service and Maintenance Cost. The annual maintenance cost of a Mazda RX-8 is $517. Repair and maintenance costs vary depending on age, mileage, location and shop.

Why is the Mazda RX8 so cheap?

Poor Fuel Economy & Daily Drivability

Another reason why the RX8 is cheap to buy now is because many are put off by the poor fuel economy of the car. Rotary engines might be small in size (and produce substantial power relative to that size) but they have a tendency to be thirsty.

Why is the rotary engine bad?

Rotary engines have a low thermal efficiency as a result of a long combustion chamber and unburnt fuel making it to the exhaust. They also have problems with rotor sealing as a result of uneven temperatures in the combustion chamber since combustion only occurs in one portion of the engine.

When should you rebuild a rotary engine?

Rebuilding a Wankel at 80,000-100,000 miles is typical, and earlier than most piston engine need such exhaustive work.

Are Mazda RX7 fast?

Engine twin-turbocharged 1.3-liter Wankel
0-to-30 mph 2.2 seconds
0-to-60 mph 5.1 seconds
Quarter Mile 13.8 at 100 MPH
Top Speed 160 MPH


29 juin 2020

Are RX7 and RX8 engines the same?

RX7 VS RX8: Powerplant

They may be both rotary engines, but they are fundamentally different. For one, the 13B-REW touts a laudably well-engineered sequential turbo system, while the RENESIS is just naturally aspirated. … While the 13B-REW is efficient at displacing its exhaust gases, combustion isn’t always complete.

What’s faster RX7 or Supra?

The top performance brought the RX-7 up to 276 horsepower which rocketed the car to a tops speed of 155 miles per hour and did 0-60 miles per hour in 5.7 seconds. … This allowed the Supra a 0-60 time of 5.1 seconds and a top speed of 160 miles per hour.

What is the problem with rotary engines?

Rotary engines have a low thermal efficiency as a result of a long combustion chamber and unburnt fuel making it to the exhaust. They also have problems with rotor sealing as a result of uneven temperatures in the combustion chamber since combustion only occurs in one portion of the engine.

How much does it cost to fix a rotary engine?

A proper rebuild, one that goes beyond running (120+ PSI warm compression numbers) will be north of $4000. With upgrades for power and longevity, you can expect to pay $6k. A Mazda remanufactured engine comes with new housings, irons, rotors, seals, etc for as low as $2900.