Audi 3.0T (Supercharged) Engines

[Audiman]

Audi is very much a case of keep it dealer serviced with an Audi warranty. I bet if this car had full Audi service history then the brand quite possibly would have paid for at least the parts/ engine.

I see it every day where Audi pays for out of warranty repairs for vehicles with full service history, even better if it was bought from an Audi dealer.

 

[andrew_j]

Audi Q7 better engine is the 2.0T imho. Guessing cannot even approach $33k replacing it.

 

[Cujet]

Tell me again how a modern 6.2L pushrod V8 is somehow inferior. Inferior in smoothness, inferior in size, inferior in MPG, inferior in reliability. Because, quite simply, it's not.

 

[The Critic]

Tell me again how a modern 6.2L pushrod V8 is somehow inferior. Inferior in smoothness, inferior in size, inferior in MPG, inferior in reliability. Because, quite simply, it's not.

GM’s lifters would like to talk to you.

 

[proveitwithdata]

I guess that person is moving into a Lexus soon?

jk, its onto the refreshed 2024 Q7, salesmen swears the engine has been updated to prevent this.

 

[Vercingetorix]

I guess that person is moving into a Lexus soon?

jk, its onto the refreshed 2024 Q7, salesmen swears the engine has been updated to prevent this.

New ones are turbocharged.

 

[Cujet]

GM’s lifters would like to talk to you.

True! However that is a component quality issue and not a design issue. The ultra complex, turbocharged/supercharged engines don't really have an advantage.

 

[proveitwithdata]

True! However that is a component quality issue and not a design issue. The ultra complex, turbocharged/supercharged engines don't really have an advantage.

did the 6.2 have the problematic afm system?

 

[edyvw]

True! However that is a component quality issue and not a design issue. The ultra complex, turbocharged/supercharged engines don't really have an advantage.

Of course they do have an advantage.
Audi engine can be sold accross the world and meet all emission standards.
Audi is German company. People generally don’t drive 6.2ltr V8 engines, bcs. those engines and $10-11 a gallon don’t go together.
They are lighter, fit smaller cars, provide better weight distribution etc. and generally still rack more miles than average GM.

 

[chris719]

Tell me again how a modern 6.2L pushrod V8 is somehow inferior. Inferior in smoothness, inferior in size, inferior in MPG, inferior in reliability. Because, quite simply, it's not.

If it's superior, why does GM not use it for CT4 / CT5 Blackwings or for C8 Z06? I think it clearly has pros and cons. Modern DOHC turbo engines can make better power (area) under the curve while still getting decent real world city and light load economy.

I agree that it is appealing to have a big V8 without forced induction, but the engines are still complex with the rest of the modern technologies and direct injection.

 

[Cujet]

Of course they do have an advantage.
Audi engine can be sold accross the world and meet all emission standards.
Audi is German company. People generally don’t drive 6.2ltr V8 engines, bcs. those engines and $10-11 a gallon don’t go together.
They are lighter, fit smaller cars, provide better weight distribution etc. and generally still rack more miles than average GM.

As a general rule, twin turbocharged DOHC V6's are neither lighter, nor smaller than a pushrod V8. Nor are they more efficient.

 

[edyvw]

As a general rule, twin turbocharged DOHC V6's are neither lighter, nor smaller than a pushrod V8. Nor are they more efficient.

As general rule? Lol. Ok. Difference is 30lbs between two. And add to that dimensions, which means ability to push engine more to the back (in Audi’s case that would be limited by Torsen).

 

[BMWTurboDzl]

As a general rule, twin turbocharged DOHC V6's are neither lighter, nor smaller than a pushrod V8. Nor are they more efficient.

Of course the V6 is more efficient due to having less rotational mass (Shorter crank, two less cylinders).

 

[edyvw]

Of course the V6 is more efficient due to having less rotational mass (Shorter crank, two less cylinders).

Interestingly BMW B58 is lighter 100lbs than 6.2 V8 and 70lbs than Audi V6TT that should be direct competition to B58.

 

[nicholas]

These kind of failures can happen on almost any engine.

Heck, one of the most reliable Ford's built (an oxymoron if there ever was one) was the late 90's Escort.
Port injected, naturally aspirated, slow and low hp, but one heck of a workhorse that many took over 200k with ease.

Yet a small handfull of folks claimed of the valve seats dropping causing serious cylinder damage.
Luckily I wasn't one of them, despite the abuse mine took.

We had a 95 drop a valve and tank the engine.
Great car otherwise

 

[Carmudgeon]

With European vehicle registration taxes based on emissions classification and engine displacement, those OEMs aren't going to be designing and dropping small block V8s into the exec class cars that engines like this were destined for, no matter how good they have become.

And neither the middle-management types who drive them, nor their companies, if they supply the cars, are going to have any regrets.

Even with a no-doubt sports car, certain market realities sometimes can't escape acknowledgment.

 

[chris719]

Interestingly BMW B58 is lighter 100lbs than 6.2 V8 and 70lbs than Audi V6TT that should be direct competition to B58.

B58 TU/TU2 is also more efficient than LS3 and LT1 with comparable output at the lower output trims of LT1. I think B58 is a sportier feeling engine also.

 

[Cujet]

With European vehicle registration taxes based on emissions classification and engine displacement,

There we are. The 3L limit is a Euro requirement. My F-Type is a 3L, it's made by pulling 2 pistons out of the 5L V8 (ugh) and using a smaller bore. Otherwise it would be about 3.8L.

It is also why I was very hesitant to purchase such a weird design. But in the end, the 3L AJ Jag V6 can handle a lot of boost and the car is $30K less expensive than the correct V8 version, due to market conditions.

 

[edyvw]

With European vehicle registration taxes based on emissions classification and engine displacement, those OEMs aren't going to be designing and dropping small block V8s into the exec class cars that engines like this were destined for, no matter how good they have become.

And neither the middle-management types who drive them, nor their companies, if they supply the cars, are going to have any regrets.

Even with a no-doubt sports car, certain market realities sometimes can't escape acknowledgment.

It is not like Euros don’t have V8’s etc. But, market realities, primarily gas prices, smaller cars, pushed manufacturers toward more innovation. Most Euro countries base registration brackets on every 500ccm or 1000ccm. So, there is some truth in that, but other factors are more important.

 

[4WD]

As a general rule, twin turbocharged DOHC V6's are neither lighter, nor smaller than a pushrod V8. Nor are they more efficient.

We be N/A again

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