puch96

not any car....... have you ever seen Toyotas with 350k miles and still running.....

RoXanneBlack8

like its been said in the first page, it depends on how u maintain it. my co worker has an 85 rx7 NA and it has nearly 180k on the original motor. if u kno what ur doing they will last a while. its idiot tuners and soccer moms who dont check their oil level that ruin it for the rest of us...

puch96

Well put... You are right

prescriptionmazda

Maybe if you redline it for the entire 60k miles...

mysql101

It's true. The rotary engine is disposable. I have had to replace it three times in the last 30,000 miles. Last weekend I went to sams club and picked up a 6 pack of renesis engines. Make sure you look for the ones with the blue label. The red one is for v6 engines.

jryeater

Any new input?

T-von

Well unfortunately that's not a good comparison. The 1st gen had taller 3mm apex seals while the Renesis has shorter thinner 2mm apex seals. That difference alone will shorten the life of the Renesis by comparison. Once the Renesis apex seals start to wear shorter, they will start flipping out of the rotor grooves (just like the top piece of the 3 piece apex seals do in high mileage 2nd gen Rx7's) cause it will have less side support from the rotor groove itself. Personally I don't see the Renesis lasting anywhere near 150k. Now if the Renesis apex seals wear less than expected, then high mileage possibilities can easily be reached.

Look at the thickness of the Renesis apex seals! It's much much shorter than the older versions:



Another thing you Rx8 owners need to watch for is the condition of your cooling system. Dirty contaminated coolant will reek havoc on your coolant seals. Filtered distilled water is best and don't ever use tap water.

Lastly, perform consistant carbon cleanings. Excessive carbon build-up will kill a rotary faster than you know it due to stuck seals which causes a loss of compression.

daisuke

bullshit, my car has 245k miles on it and still gets 36 mpg on a good day. (it's a saturn too)

still... it better be a damn good deal with that many miles on it. no way I'd pay more than $15k for a car model that is still too young to have proven it's engine life.

jpav123

iTrader: (4)

Bringing this back to life! Engine failed at 59K. Mazda sent a "bad" core, so I'm on my third engine. The dealership says Mazda has fixed the problem, but I call BULL ****! Screw the RX8...I love it, but I'm tired of all the problems. I've had a TON of problems with ignition coils, spark plugs, 6th gear going out ect. I don't race it and I drive 5 miles round trip to work.

RotaryResurrection

iTrader: (3)

We are still in the "wait and see" stages as many of these cars are still low mileage and weekend cruisers. Still from what I am seeing I believe it will be the exception rather than the rule for most of these to make it to 150k miles or even much past 100. My 04 AT original engine had 117k when I pulled it out and though it still ran fine, it started slow/weakly and had below average/acceptable compression values per mazda guidelines.

I have a car with a hair over 100k here right now for rebuild, catastrophic failure. I've also rebuilt three others with about 80kish miles (catastrophic failures). A couple weeks ago I serviced a local lady's 8 with about 40k IIRC and compression tested it while changing the plugs just out of curiosity...got values below 100psi on both rotors, so it's not far away from needing an engine.

Most of these are reported by the first or 2nd owner who changes the oil at 3000 mile intervals with mazda recommended 5 weight, run premium fuel, and do not race the car, so I would consider them indicative of the average owner.

Aseras

ha well posted way back in 06, now I'm over 108K still original engine, still going strong. Still getting 21-22 mpg no matter how I drive.