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Only time will tell. If it is the AFM system that is wearing out TCs, one would expect more and more to fail as the mileage racks up. It's also interesting that those who drive in M mode w/ paddles seem to report problems less, which lends more credence to the AFM/TC damage theory.
The early A8s seemed to experience more early and the later ones seem to be better now, but I want to see what happens w/ these cars starting above 20K miles and beyond.
I have a 2017 Grand Sport with 6k miles on it and my A8 has worked flawlessly for me. I drive 100% in manual mode and it has never shifted without me telling it to.
Only time will tell. If it is the AFM system that is wearing out TCs, one would expect more and more to fail as the mileage racks up. It's also interesting that those who drive in M mode w/ paddles seem to report problems less, which lends more credence to the AFM/TC damage theory.
The early A8s seemed to experience more early and the later ones seem to be better now, but I want to see what happens w/ these cars starting above 20K miles and beyond.
I repeat my initial post, an assumption that "ALL" A8s will fail is an incorrect and ridiculous assumption.
My 2017 GS has about 700 miles so far. The A8 seems to be somewhat erratic in its shifting. Hoping it is still "learning" my driving habits. My 2012 SRX shifted terrible during it's learning process, but shifts great now, so still hoping for improvement. Othwise no issues.
2017 Z - First 2k miles car would intermittently jerk & bang, then an AFM/DOD delete (plugs) during engine mods/tune. 5k now & its like driving a different car - smooth as silk. I still don't know why GM decided AFM was a good idea on these cars & that **** system is whats shelling these A8s.
GM had no choice, they had to meet the EPA requirements. I for one could never understand a Corvette in a 4 cylinder mode. It is quite a "HIT" to want an automatic and have to put up with that requirement of the AFM.
I have a 2017 Grand Sport with 6k miles on it and my A8 has worked flawlessly for me. I drive 100% in manual mode and it has never shifted without me telling it to.
Honest question here - If you drive the A8 in Manual 100% of the time, why not just buy an M7?
My 2017 Z06 A8 only has 734 miles on it but it drives flawlessly . However with all the negative comments I started driving mine in M mode so it will not go in V4 mode. I got use to this mode and almost always drive it in M mode unless I am on a straight away and once in a while I will put it D mode. Went to M mode thinking it would help save the TC but ended up really enjoying M mode in the Sport setting. I love this car so much it will be my last Corvette till I cant drive anymore!
A8
Last edited by Always Red Dave; 10-22-2017 at 11:59 AM.
My 2017 GS A8 has performed flawlessly so far.
Across the GM brand there must be a couple hundred thousand vehicles
out there where A8s perform without issues while there's probably only been a couple
hundred +/- failures reported on this forum.
Did all 2017s receive the improved TC and fluid or were the improvements implemented at a certain build date during the year?
Anyone know?
I was told a while back (by a reliable source which I can't remember now) that all 2017 A8 C7's made after December of 2016 had the "improved" TC in them. My GS was built in January, 2017 and, while I drive mostly in manual mode, it hasn't had any issues to date. I've been experimenting with Drive and allowing it to go into V4 occasionally in order to see if it fails but so far it has been perfect. Almost 3,000 miles to date. Keeping my fingers crossed.
I have 46,100 miles on mine. It's the best automatic transmission I have owned. Drive it hard and do a lot of wide open throttles and down-shifts. It has been perfect, knock on wood. Reading the forums I keep waiting for it to fail. I read a lot about these failures and I am under the perception that at most, 5 percent have issues.
I get it. I got lazy too getting an A8. I play around with Manual mode now & then and find the delay/lag annoying.
Plus some guys have mentioned health reasons like bad back,hips and knees and that's why they cant drive a Manual Corvette because of pain when they push in the clutch. I was in my work truck the other day and ran into this guy in his 60's at the gas station with a 2013 C6 427 vert. I said nice car he said it is for sale and I asked him why . He said that shifting and pushing in the clutch caused him pain in his back and knees. I said I understand. He said he was going to trade it in for a C7 AUTOMATIC.
Last edited by Always Red Dave; 10-22-2017 at 12:14 PM.
They're mechanical devices and as such will eventually fail. As will any other transmission/engine/diff/etc.
Incorrect, as I expect quite a few or probably most will go to their final resting place over the years to come as a result of general fatigue, being totaled out due to accidents or any number of other reasons with their A8 still working fine.
Honest question here - If you drive the A8 in Manual 100% of the time, why not just buy an M7?
Not sure aboutdaixloxbmw, however I like manuals (my daily driver is a manual) but if you ever go to sell your C7, the pool of potential buyers is greatly reduced these days for manual trans cars. That's why it's not easy to find M7 equipped C7s on dealer lots.
With the A8 you sorta get both worlds.
Last edited by Kevin A Jones; 10-22-2017 at 12:24 PM.
Thousands of good A8s out there, so far mine included. .
According to the GM numbers, they have delivered over 89,000 A8 C7's. That's a lot of A8's, most with no issues. I only have 982 miles on my 2016, not enough to tell yet.
10-22-2017, 11:31 AM
