HWY1Driver

I am looking at purchasing a relatively high mileage (60-80k) 991.1. Beyond checking out the car and getting a PPI inspection, what type of maintenance issues should I be concerned about in the near future of ownership? Assuming the vehicle has been mechanically maintained and has had oil changes on a regular basis what can I expect from ownership as the car approaches 100k? Are there major services that are required/recommended at 100k?

mhconley

Porsche's recommended maintenance checklist is attached.

subshooter

Outside of the recommended normal maintenance here are some other maintenance items that you may have to perform up to 100k that are more corrective maintenance:

1. Water pump
2. Belt tensioner
3. Ignition coils
4. Shifter cables (if manual). They seem to break at about 60k.
5. I'm guessing that a car between 60-80k has its front brake rotors and pads replaced already so the rear ones likely wont make it to 100k. Depends heavily on how the car was driven though.
6. Frunk hood shocks.

These are just some quick thoughts off the top of my head. Results vary.

Joec500

I have over 100k on my manual 991.1

The cables seemed ok when I replaced mine at 85,000 miles. I did it as preventative and performance.

There should have been 1-2 plug changes, and hopefully ignition coil replacement at 80k miles. If not done, it's not a deal breaker. The job is relatively easy and not too expensive.

As per above, check brake wear, and tire wear

Check leaky shocks, but at that mileage they should still be OK .

If manual def get an over rev report and double check to see if the reverse lights work (recall for internal failure on 7mt's so Porsche should cover this up to 100K miles)

Other than typical fluid changes the car didn't need much maintenance at this mileage.

Other than that, the cars are relatively bullet proof.

Enjoy!

drdantheman1

Check to see if COV valves have been replaced. If it has sport chrono, see if active engine mounts have been replaced. See if rear spoiler has been replaced (or the spring perch "reinforced"). Haven't really seen water pumps go bad on 991.1's. Belts, plugs, coils should have been replaced already. From experience, the rear pads usually wear out first on these (overactive TC when not in S+), but F+R should have been probably changed once by now. Overall, these cars are very solid.

subshooter

On my 981, they failed at 63k miles. It got stuck in third gear while I was in downtown New Orleans. I still drove it to a Porsche dealer for replacement including starting out in 3rd gear at three red lights. Clutch still good at 74k miles now! $1,387 to replace. I wish I would have used that opportunity to upgrade to a numeric shifter.

Joec500

All good points here too, obviously none are deal killers if you find a good car, but def use them to your advantage if any of the above are not up to snuff.

rwbern

I really don’t consider 60-80K high mileage. Every 911 I have had went well over 100K. Heck, the purchased new ‘65 356SC had over a 100K when I let it go in what seems like a lifetime ago. If the car has had the minimum scheduled maintenance you should be fine, but guys that drive a 911 that long, usually do a lot more than scheduled maintenance. Any major problems should jump out in an Independent inspection.

Joec500

To be fair, earlier 911's are much simpler machines with less brittle plastics and annoying computer things, but as someone with a 991 and putting the majority of the 100K miles on my car, I assure you that a 60-80k car should be solid for 10's thousands of miles assuming maintenance and care.

z168

Got an guestimate how much these three would be serviced?

Although my 991.1 is still under CPO, it now has 74K miles.

Joec500

Water pumps are more a 991.2 thing especially at your mileage.
Ignition coils are around 200-300 for parts and labor is free if you do it yourself (2 hour job with jackstands and hand tools) My guess is a shop will charge 300-400 in labor
Belts should be pretty straightforward, the part is under $100 and labor is prob 1-2 hours so maybe 300-400 as well. OR Diy, it's not tough.

koala

Adding to the above, I had my engine coolant fully flushed and replaced this year. The car is 11 years old now and it felt like a good idea. I had an indy do this as I knew it was fairly involved. $430 CAD and they were extremely thorough, drained and added 20 litres of coolant + all new seals on drain plugs.

If it is a manual, you could also have them flush the clutch fluid. I also had this done at the same time as the coolant, and it was $139 CAD.

JimEb

Bought my car at 92k.

Stuff I replaced I kind of did because I wanted a project car.

- brake pads and rotors (really needed them)
- clutch, flywheel, RMS (clutch wasnt too bad, flywheel was done)
- trans fluid (might as well since I did the clutch)
- sparkplugs (then saw they were changed less than 20k miles ago…oh well, it was only $26)
- drive belt
- Numeric shifter and cables. (Plastic clips were shot on the OEM cables. Left me limping it home with half my gears once)

Joec500

I think the clutch uses the same fluid system as the brakes. So it's a 2 for 1

koala

I'm always so confused about this. I had them do the brake fluid as well, and they were adamant that the clutch is bled from a different location. I have no idea what to think at this point