Audi Q7 3rd generation - 3.0 TDI V6 - cam gear wear
Discussion
Hi
I'm looking at Q7s and my research points me to an issue with excessive cam gear wear resulting in £4-8k of remedial work, since the cam gears are not separable from the cam shafts, and the shafts are cast into a bigger unit. A video on VAG Technic's YouTube explains far better than I can: https://www.youtube.com/watch?v=pjiqSLAAIfY&t=...
I'm just wondering "how big" the issue really is from those in the know and whether the later 2019 onward engines are affected. The 2015-2018 Q7s have a different 3.0 TDI V6 vs the 2019 onward cars (those badged 45 / 50 TDI) by engine code i.e DHXA/DHXC in the later cars and "CRT" in the 2015-2018 Q7s. I can't find anything definitive online.
Leaning towards buy a 2019 model but sadly that rules at the diesel hybrid option as that is only available pre 2018 with the CRT engine.
I am the sort of owner who will keep on top of maintenance and will make sure it on annual servicing rather than long life, if that makes any difference since the issue appears to be oil circulation related.
Cheers for any advice.
I'm looking at Q7s and my research points me to an issue with excessive cam gear wear resulting in £4-8k of remedial work, since the cam gears are not separable from the cam shafts, and the shafts are cast into a bigger unit. A video on VAG Technic's YouTube explains far better than I can: https://www.youtube.com/watch?v=pjiqSLAAIfY&t=...
I'm just wondering "how big" the issue really is from those in the know and whether the later 2019 onward engines are affected. The 2015-2018 Q7s have a different 3.0 TDI V6 vs the 2019 onward cars (those badged 45 / 50 TDI) by engine code i.e DHXA/DHXC in the later cars and "CRT" in the 2015-2018 Q7s. I can't find anything definitive online.
Leaning towards buy a 2019 model but sadly that rules at the diesel hybrid option as that is only available pre 2018 with the CRT engine.
I am the sort of owner who will keep on top of maintenance and will make sure it on annual servicing rather than long life, if that makes any difference since the issue appears to be oil circulation related.
Cheers for any advice.
VeeReihenmotor6 said:
Hi
I'm looking at Q7s and my research points me to an issue with excessive cam gear wear resulting in £4-8k of remedial work, since the cam gears are not separable from the cam shafts, and the shafts are cast into a bigger unit. A video on VAG Technic's YouTube explains far better than I can: https://www.youtube.com/watch?v=pjiqSLAAIfY&t=...
I'm just wondering "how big" the issue really is from those in the know and whether the later 2019 onward engines are affected. The 2015-2018 Q7s have a different 3.0 TDI V6 vs the 2019 onward cars (those badged 45 / 50 TDI) by engine code i.e DHXA/DHXC in the later cars and "CRT" in the 2015-2018 Q7s. I can't find anything definitive online.
Leaning towards buy a 2019 model but sadly that rules at the diesel hybrid option as that is only available pre 2018 with the CRT engine.
I am the sort of owner who will keep on top of maintenance and will make sure it on annual servicing rather than long life, if that makes any difference since the issue appears to be oil circulation related.
Cheers for any advice.
On the A7 it doesn't seem to be a common issue at all and that has the same CRTD engine.I'm looking at Q7s and my research points me to an issue with excessive cam gear wear resulting in £4-8k of remedial work, since the cam gears are not separable from the cam shafts, and the shafts are cast into a bigger unit. A video on VAG Technic's YouTube explains far better than I can: https://www.youtube.com/watch?v=pjiqSLAAIfY&t=...
I'm just wondering "how big" the issue really is from those in the know and whether the later 2019 onward engines are affected. The 2015-2018 Q7s have a different 3.0 TDI V6 vs the 2019 onward cars (those badged 45 / 50 TDI) by engine code i.e DHXA/DHXC in the later cars and "CRT" in the 2015-2018 Q7s. I can't find anything definitive online.
Leaning towards buy a 2019 model but sadly that rules at the diesel hybrid option as that is only available pre 2018 with the CRT engine.
I am the sort of owner who will keep on top of maintenance and will make sure it on annual servicing rather than long life, if that makes any difference since the issue appears to be oil circulation related.
Cheers for any advice.
My only recommendations on these engines are to do regular oil changes every 6000 miles, and have the idle oil pressure increased to protect the engine long term. They are generally quite reliable. The only large expense that is common (well, inevitable) is coolant leaks in the V. That costs around £1000-1200 to put right.
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