36couper

I've sold my '65 L78 coupe and will be in the market for a 2015-2016 C7. It has be be a manual for me.
I did a search but couldn't find a thread that covers any issues with the M7.
After reading all the threads about TC problems with the A8, I will stick to the M7

thill444

The only "problem" is that sometimes going from 1st to 2nd before the car is warmed up (especially in the winter when it is colder) is not always smooth (more notchy). And for some, it take time getting used to 7th gear (going from 3rd to 5th sometimes people shift to 7th). It took me just a few drives to get used to 3rd to 5th and I am rarely in 7th.

Otherwise I love the gearbox in this car. Very direct and good feedback and short throws. They seem very reliable and some people are pushing 800hp+ on the stock 7M with no issues. It's a robust box.

davepl

The TC problems only seem to apply to the Stingray.

The M7 has its share of issues as well, so I wouldn't make my transmission choice based on either... pick the one you like to drive better.

Maxpowers

I've read of very few problems with the M7 other than the cold notchy irritant that thill444 mentioned above. And even in the winter its not that bad.

Jaykoh-Z51

Also, the hill assist took getting used to. I always expect the car to roll back but the brakes hold ya until you begin to feather the clutch.

You cannot turn it off

Foosh

Agree, no issues ever on my '14 M7, and it's equal to the best manual I've ever driven.

On the 1-2 "notchiness," one of the tricks I've found is to hold leftward pressure during the 1-2 shift, which generally removes all notchiness during that shift.

Woodson

I have not seen a single issue with the M7 other than the stiff 1-2 shift when cold, which all my manuals have had. Double-clutch the 1-2 when cold and the issue is resolved. Works for me in -30 degrees. I never use 7th.

Woodson

Links?

WMark

15k miles and no issues with my '16 M7. As mentioned, I've seen few complaints other than the 1-2 thing. In fact, my last four Corvettes have been manuals and I never had any tranny problems with any of them (one C5, two C6's and the C7).

You will find haters, but I think the hill assist is sweet.

Oh... and the Corvette attached to the M7 is also pretty sweet

l2vette

The M7 is sweet!
I changed the tranny fluid at 500 miles along with the engine oil and rear end, smooth shifting..no issues!! Highly recommend the three pedal setup!!

drs

Just piling on at this point....

My '15 is approaching 10K miles. No issues at all.

Kent1999

Really? This is the first I've heard of ANY issues endemic with the M7.

The 1-2 notchiness when cold is the ONLY thing I've heard of -- not sure you could really classify that as an issue, as it doesn't cause any failure, and goes completely away when the trans is warmed up to operating temp.

Please provide links to these "share of issues" common to the M7 of which you speak.

davepl

Clutch pedal sticks to floor when speed shifting
Needing to change fluid with a turkey baster
Notchiness 1-2 shift requiring alignment of shifter
Sounds like a coffee can of marbles at parking lot speeds
CAGS and needing eliminators
First mod always being the MGW shifter for some reason

Combined with being slower in the quarter, slower to sixty, slower on road course, makes it a hard sell for me. But I traded mine off, so I'm not up to speed on the issues.

Is it a bad trans? Of course not. I love Tremecs. I have several of them (TKOs), and I'm not an M7 hater. But let's not play the game where you read that the Stingrays had a TC issue and thus automatics suck and manuals are problem free.

Like I said, I have manuals. I have automatics. I have a DCT. But I'm a realist.

36couper

I've always been a 3 pedal guy. To me, it makes the driving experience more active. Driving a manual is a lost art with the younger generation. All of my daughters can drive a stick.

davepl

Your great grandpappy probably said the same thing about you whippersnappers not having to set your mixture and timing using the stalks on the steering wheel.

He'd say if you're not controlling the fuel-air ratio and the spark advance, you're basically just a passenger.

If you're in the mood, you can pick the specific gear you want to be in with the A8 paddles and make the ratio changes at the moment you prefer, and those decisions - that "driver involvement" are the same decisions you'd make in an M7. You just don't use your left foot.

Not much beats pulling second with a little sidestep though. But I have other cars for that when I feel the need. The other 99% of the time I prefer the A8, but that's just me and why I bought it.

I taught my kids to drive a stick in my Z06, as it was the only warranteed manual I had at the time :-) Now the younger ones will have to learn in a '69 Camaro.

Woodson

Not this debate again. The OP's question, after reading about the A8's problems, was have there been problems with the M7. The answer is no.

DAFFYDRUNK

Not sure how this turned out to yet another A8 vs m7 thread, but m7 is a safer bet. There's probably a thread about TC failure in the first page of the C7 forum right now, but you'll have to search awhile for m7 failures.

davepl

What about the ones I listed? Are those just "quirks" or something? They felt like problems on MY car. If the solution is to "double clutch 1-2 when cold", that's a problem to me.

This will soon degenerate into another "manly men with hair chests shift their own transmissions" thread so I'm out.

This isn't comp.sys.transmissions.advocacy, after all. You don't have to pick one. They both have their merits and their problems.

Corgidog1

On what do you base the conclusion that the M7 is as problematic as the A8?

davepl

I made no such claim. I only said it wasn't problem-free. Nothing more.