RandyLee

This one Audi USA knows about. They changed the piston rings (only inside 4/0K warranty) to a new set of 8 pistons and piston rings, and connecting rods. They will have to perform a oil consumption tests (2) to establish if oil usage is beyond their rated amount. (do know know what that figure/spec is yet). You can be sure I will be watching my oil level, and starting a consumption test at dealer if anything is awry. I've owned V-8 and V-6 twin turbo Mercedes for years and they NEVER burn oil. The TSB Group 13/ Number 23-19. 13 23 21 207 1114/2.

I hope everyone who reads this that has the 4.0 V-8 will take heed. My guess is that this is a $5K-$8K repair outside of the 4/50 warranty. 2023 Audi SQ8 Quattro (4MN)
V8-4.0L Turbo (DWRB)

Engine oil level too low, engine oil consumption too high

Internal 13 Engine oil level too low, engine oil consumption too high 13 23 21 2071114/2 November 17, 2023. Supersedes Technical Service Bulletin Group 13 number 23-19 dated August 31, 2023 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment A8 2019 – 2021 Not Applicable 4.0L Engine S8 2020 – 2023 SQ7, and SQ8 2020 – 2023 RS 6 Avant, and RS 7 2021 – 2023 Condition REVISION HISTORY Revision Date Purpose 2 - Revised Service (Updated formatting) Revised Required Parts and Tools (Added pa

RandyLee

Technical Background Change to piston ring geometry. Production Solution Updated piston rings introduced.

LEC84

Yeah they replaced my engine at about 8000KM if I remember correctly. Still ended up with a low oil light, then they tried to charge me for a top up. I got rid of it in November. End of the day I didn’t care it was a lease.

RandyLee

Does anyone know the oil consumption spec for these 4.0 engines (how many litres/quarts per 1,000 miles)

Ron.S

Check your owners manual. It should be like the similar Porsche Cayenne GTS V8, a Quart in 800 miles deemed normal (going from memory). The spec is obvously meant to make it hard to warranty excess consumption. Mercedes has a similar spec. The engines use low tension rings top and bottom so break-in can be a factor. I found that short trip city driving uses more oil than highway...probably because of more cold engine miles. For whatever reason there seems to be a large difference in oil consumption across similar V8 engines.

RandyLee

My 2023 Owners Manual says "1 quart in 800 miles". thanks Ron.

huntpsu1

First 10k, was using about 2 quarts every 5 k miles. Last 10k, has slowed to about 1 quart every 5k miles.