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Asking for help please!!!!!! I have owned from new my A5 Sportsback 2015 (64) 3L Auto CVT Multitronic diesel now with 130K motorway miles. Don't want to sell it and need to fix the following : i wanted a best guess to repair.

Minor Oil leak which is from the side of the engine not reachable back of engine and front of fire wall. so engine needs to come out, and is NOT from the sump.

CVT transmission issues, over revs and jumps and snatches at 1st start up or on steep gradients like pulling into the driveway. No slipping while driving what so ever just seems at initial engine start up.

Also has knocking from what i can assume is CV joint/ drive shaft when turning full lock.

When i brake the car judders like driving over rumble strips. Just changed the front and read Brake Pads and Rotors and problem still exists........Not sure what it can be.

Anyone have similar experiances as i'm OK with costs to replace driveshafts, transmission and fix oil leak. as great car and cheaper to spend £10K on now it than buy 2nd hand vehicle. for same money. :)
 

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Wouldn't the 3.0 TDI have the S-tronic gearbox? Sounds like one of the clutches is starting to slip. I don't think that's possible with an actual CVT, they work differently.
Any gearbox work is going to be expensive, and the labour cost will be a big part of that so it really depends on who does the work.

The oil leak is hopefully just a gasket somewhere, but again the labour to drop the engine out will be the big cost.

The juddering brakes is an odd one, new discs usually solves that problem. Might just be some rust on the hubs that needs cleaned up?
 

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If you indeed have a CVT, then that transmission is probably ready to be replaced by a new one. There is no rebuild potential, at least in the high labor rate countres like USA and Western EU. Takes too long and too many specialty tools. Ukrain and India seem to have mechanics that can fix anything since their labor rates are low so it's still economical to rebuild.

The oil leak could be a rear main seal, which would require the removal of the engine since that's where the engine and transmissions joins. Drive shaft replacement is easy by comparison. Just make sure you get genuine Audi or really good OEM.... definitely not some no-name vendor from eBay... regardless of the country of origin of the parts. I'd take a genuine Audi part Made in China over a no-name Made in EU part any day.

Shuddering when coming to a stop, if you have a CVT, is also transmission related. As you stop and the engine/wheel speeds slow, the transmissions needs to adjust the gear ratio so the engine doesn't stall. My guess is that the gear groves at the higher ratio (for lower speed) is worn out. That would explain the problems you're having at 1st startup or driving into an incline which requires low speed but high torque.

I think the Nissan CVT is the only transmission that has a worse reputation than Audi's.
 

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Wouldn't the 3.0 TDI have the S-tronic gearbox? Sounds like one of the clutches is starting to slip. I don't think that's possible with an actual CVT, they work differently.
Any gearbox work is going to be expensive, and the labour cost will be a big part of that so it really depends on who does the work.

The oil leak is hopefully just a gasket somewhere, but again the labour to drop the engine out will be the big cost.

The juddering brakes is an odd one, new discs usually solves that problem. Might just be some rust on the hubs that needs cleaned up?
yes it’s a 3.0L 6cyl CVT MULTI TRONIC. Only wish it was S-tronic. Audi want £150 just to test drive it to diagnose each of the problems I have. Seeing there are 4 issues to consider £600 just to walk around it. 😏. That apparently doesn’t include using tools to inspect further as that’s addition £205/hr to dig deeper. Was told It’s £2300 to drop the engine to have a look. I need to think what’s the best garage to do the work. The braking judder issue does throw up some oddities…..
 

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If you indeed have a CVT, then that transmission is probably ready to be replaced by a new one. There is no rebuild potential, at least in the high labor rate countres like USA and Western EU. Takes too long and too many specialty tools. Ukrain and India seem to have mechanics that can fix anything since their labor rates are low so it's still economical to rebuild.

The oil leak could be a rear main seal, which would require the removal of the engine since that's where the engine and transmissions joins. Drive shaft replacement is easy by comparison. Just make sure you get genuine Audi or really good OEM.... definitely not some no-name vendor from eBay... regardless of the country of origin of the parts. I'd take a genuine Audi part Made in China over a no-name Made in EU part any day.

Shuddering when coming to a stop, if you have a CVT, is also transmission related. As you stop and the engine/wheel speeds slow, the transmissions needs to adjust the gear ratio so the engine doesn't stall. My guess is that the gear groves at the higher ratio (for lower speed) is worn out. That would explain the problems you're having at 1st startup or driving into an incline which requires low speed but high torque.

I think the Nissan CVT is the only transmission that has a worse reputation than Audi's.
You make some good points. however, the brake shudder when I coast in neutral still happens so i don't think it’s transmission related and happens at any speed. Feels like a bent driveshaft wobble but only feel it upon braking not coast or accelerate. The recent budget replacement disks may be faulty and need replacing again to cross them off the target part fault list. But it is odd and un likely to be that unlucky with rotor replacements.
 

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Well, I always start with the easiest and cheapest repairs first. Don't want to spend thousands on a transmission when it could just be a bad brake component.

Let's hope you're right and I'm wrong.
 

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Hey gang!!! As far as I know this cannot be the CVT gearbox for a simple reason, the 3L diesel makes TOO much torque so it is only fitted to the smaller less powerful engines, for instance on my old 3.2 petrol V6.

And you need to take things one small step at a time. LEAVE the official Audi stealers and go to a good indi VAG specialist and get his opinion. Given that you have the car from new and always serviced then the situation cannot be toooooo tragic I think. You can always buy used parts and replace things slowly!!!
 

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That's what I was thinking Simon, I didn't think the CVT was ever paired with the 3.0.
By the way, my V5 says it's a CVT, but that is complete cobblers! It's 100% definitely an S-tronic.
 

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Hi I am pretty sure dave kwatrro had a 3.0 tdi with cvt gearbox, and I definitely had a cvt gearbox in my 3.0 supercharged A6 (446 bhp)
If my memory serves me right they did put a 6 speed multitronic in the A5 sportback(204 bhp) which was down on power from the s tronic(245 bhp) version 🤔. It was also front wheel drive not quattro.
 
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Racks you are a genius, we need you mate!!!! My A5 3200 was also 2WD, by the way.
 
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