Mercedes - AMG A45 S specs

not true

the 4g63 can do 500k+ without any problems, it all comes down to how it's been modded and tuned.

you can have the engine blow up within weeks with just bolt-ons, if the tuner has no clue what he's dealing with here.

Yeah, it comes down to basically replacing everything and leaving just the block. And then you still call it 4g63 when in reality it's a custom engine.

This new AMG engine comes from factory with 420 PS ready to serve for many years and 100s of thousands of kms, pass emissions tests, noise tests, comply with everything, and return decent fuel efficiency. Try that with a box of aftermarket parts.

uk version had the fq-400 and it was reliable, amg teddy bear is too late

the reliability of modern projects in my experience has diminished.
materials etc. will also be improved, but then there are design and production errors,
and the poor unfortunate end customer pays the consequent.
Car manufacturers are not responsible for car problems after the warranty.
Example, automatic transmissions cost a lot and last less, if an automatic gearbox is broken on mk7 R, s3, megane rs, a45, etc. etc ... the repair costs more than 5000euro.

we need 150.000km without problems cars , not cars with a lot problems before 150.000km. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

compare the torque curve of this old fq 400...

Not sure on what examples you base your A45 comments; however I had a lightly tuned Gen 1 on which I did just over 100K Kms in three years, without any problems with the drive train, including track days, in arguably one of the world's harshest environs for a performance car. (Australia)
Then just before Christmas, got out of my heavily tuned (400KW's at the wheels) Gen 2 with 80K Km's, again without ANY drive train problems.
Now waiting for delivery of my Gen 3 vehicle. Would never have bought it, obviously, had I not had the experience I did with the first two. each time I have purchased one of them IE three times, I have driven Audi and BMW's best equivalents of the time. My purchase decision speaks for itself.
Of course, if we are going to include Renaults and VW's in the comparison, well everything goes out the window. Just not logical, like one of the other guys here who wanted to compare a mass production Ford engine for goodness sake with a hand built AMG engine. I just hope everyone talking about the new 2.0L from AMG has at least looked at the Video of how they are built and understands at what they are looking.

To compare a mass production Ford engine with a hand built AMG engine is somewhere between insulting and just plain stupid