[malpatti]

Just reading about this power plant for the new X7 and 7 series makes me happy that BMW have made a new V8 S68 for all M/M performance cars and my guess (!) is given the product alignment it is highly likely to be the engine used in the new M550 next year. The mild-hybrid should aid a tad with mpg and the integration seems interesting - right into the transmission. Anyway hopefully this’ll mean it won’t be much heavier than my current 2022 M550 - no big batteries

https://www.bmwblog.com/2022/04/15/b...vision-engine/

[Joe-BMW33]

Originally Posted by malpatti

Just reading about this power plant for the new X7 and 7 series makes me happy that BMW have made a new V8 S68 for all M/M performance cars and my guess (!) is given the product alignment it is highly likely to be the engine used in the new M550 next year. The mild-hybrid should aid a tad with mpg and the integration seems interesting - right into the transmission. Anyway hopefully this’ll mean it won’t be much heavier than my current 2022 M550 - no big batteries

https://www.bmwblog.com/2022/04/15/b...vision-engine/

Whenever BMW introduces a new V8, the first generation of it is a nightmare.

[Antec800]

I think they learned that with the first and second gen n63 and first gen s63

[HerkHealer]

Originally Posted by Antec800

I think they learned that with the first and second gen n63 and first gen s63

This engine is going to be a tuners dream. Same powerplant for Every M/M Performance car/SUV in BMW's lineup. They are estimating the M5 to have over 700 HP, but it will be "unique" in ways different from the M Performance vehicles. Probably bigger turbos, intake, etc. I've also read the transmission will be new as well to handle all that Torque.

As Joe mentioned, I would not buy year one of this, but it will be interesting to see how much HP they allow into whatever the new M550 is going to be called. I'm hoping it doesnt look anything like the new 7 series though.

[MauiSteve]

For anyone considering long term ownership of an N63, S63, or the new S68 vehicle I really think it's important to take a long hard look at the cooling system and the multitude of coolant hoses. In my opinion owning these engines out of warranty is a potential giant money pit. The coolant hoses can begin to have issues at 70K miles, and will almost certainly come out to bite at 100K miles. Variability probably depends on climate driven and if the vehicle is regularly garaged. These cars are fun to lease, but leasing right now in this auto market is a crap deal in most situations. I believe for long term ownership the B58 and even the S58 will prove to be more reliable platforms.

If you want an example, have a look at the complicated coolant system of the S63 engine in the video below, and have a listen to the opinion of this mechanic:

https://www.youtube.com/watch?v=zngFlteOKz4

[NGT2]

Originally Posted by MauiSteve

For anyone considering long term ownership of an N63, S63, or the new S68 vehicle I really think it's important to take a long hard look at the cooling system and the multitude of coolant hoses. In my opinion owning these engines out of warranty is a potential giant money pit. The coolant hoses can begin to have issues at 70K miles, and will almost certainly come out to bite at 100K miles. Variability probably depends on climate driven and if the vehicle is regularly garaged. These cars are fun to lease, but leasing right now in this auto market is a crap deal in most situations. I believe for long term ownership the B58 and even the S58 will prove to be more reliable platforms.

If you want an example, have a look at the complicated coolant system of the S63 engine in the video below, and have a listen to the opinion of this mechanic:

https://www.youtube.com/watch?v=zngFlteOKz4

Man you just had to throw that in here didn't you… some men just want to watch the world burn

[HerkHealer]

Originally Posted by MauiSteve

For anyone considering long term ownership of an N63, S63, or the new S68 vehicle I really think it's important to take a long hard look at the cooling system and the multitude of coolant hoses. In my opinion owning these engines out of warranty is a potential giant money pit. The coolant hoses can begin to have issues at 70K miles, and will almost certainly come out to bite at 100K miles. Variability probably depends on climate driven and if the vehicle is regularly garaged. These cars are fun to lease, but leasing right now in this auto market is a crap deal in most situations. I believe for long term ownership the B58 and even the S58 will prove to be more reliable platforms.

If you want an example, have a look at the complicated coolant system of the S63 engine in the video below, and have a listen to the opinion of this mechanic:

https://www.youtube.com/watch?v=zngFlteOKz4

From the front end of that car, it looks like a very early S63 engine. They have made several upgrades over the years to improve cooling, internals, etc. My 2020 N63 does not look anything like the 2017-2019 engines due to this. BMW is good at upgrading areas that are weak, but if you're comparing year #1 engines to have flaws versus the updated engines........you're correct.

[malpatti]

Hopefully they’ve learnt their lessons by now with reliability but yes let’s see how the new engine in the X7 and 7 series fares. My current lease is up in 2024 so perhaps there will be a technical update by then if necessary.

Unless my dealer buys my car back again at full lease balance like last year in which case I’ll just upgrade next year

[Joe-BMW33]

Originally Posted by MauiSteve

For anyone considering long term ownership of an N63, S63, or the new S68 vehicle I really think it's important to take a long hard look at the cooling system and the multitude of coolant hoses. In my opinion owning these engines out of warranty is a potential giant money pit. The coolant hoses can begin to have issues at 70K miles, and will almost certainly come out to bite at 100K miles. Variability probably depends on climate driven and if the vehicle is regularly garaged. These cars are fun to lease, but leasing right now in this auto market is a crap deal in most situations. I believe for long term ownership the B58 and even the S58 will prove to be more reliable platforms.

If you want an example, have a look at the complicated coolant system of the S63 engine in the video below, and have a listen to the opinion of this mechanic:

You make good points. I personally don't take the dive into BMW V8 land for long term reliability and by that I mean over 100k miles. I'd be fooling myself if I thought I would be driving the same car at that point. But as a rule of thumb, my elevator speech has always been, never drive a BMW out of warranty, and that was always Factory or CPO to me. So 100k was the Mendoza line for me. Warranty ending, start looking. Even my 2003 E39 has just a bit over 100K and that is another story, no warranty and I think I've put $10,000 into it the last year and a half.

Anyway, I am and always was lured by the thrill of the BMW V8's and I have also been a victim to them. Engine replacements, valve jobs, etc. Major inconvenience but all under warranty.

I'd probably take a chance on this new engine out of the box as I have self control issues.

[H_T]

My guess is that they will finish off of the G30 m550s with the N63TU3 (used since 2020), and the new engine won't be used until the 2024 model.

[23109VC]

Originally Posted by H_T

My guess is that they will finish off of the G30 m550s with the N63TU3 (used since 2020), and the new engine won't be used until the 2024 model.

Are there expected big differences in reliability between the V8 in 2018-2019 M550's vs the 2020+??

Mine is under extended CPO for three more years and I was thinking I'd get rid of it then if it happens to have issues .

[HerkHealer]

Originally Posted by 23109VC

Are there expected big differences in reliability between the V8 in 2018-2019 M550's vs the 2020+??

Mine is under extended CPO for three more years and I was thinking I'd get rid of it then if it happens to have issues .

I would say no. If so, you'd be hearing it here in this forum.
The 2020's+ did get quite a few upgrades to "harden" the engine and allow it to handle higher HP and torque levels that the motor produces.

Several people have dipped into the 10's with just a piggyback tune and intake, which is very respectable. That is a really fast production car.

[H_T]

Originally Posted by 23109VC

Are there expected big differences in reliability between the V8 in 2018-2019 M550's vs the 2020+??

Mine is under extended CPO for three more years and I was thinking I'd get rid of it then if it happens to have issues .

This page has a good breakdown of the differences:

https://bmwtuning.co/bmw-n63-vs-n63t...tu2-vs-n63tu3/

Notes for the TU3:

Electric arc wire sprayed cylinder walls
Piston skirt coating
Crankshaft re-balanced with new main bearing shells
Forged rods from S63TU4
Larger turbochargers with electrical blow-off valves
Updated ignition system, taken from modular B series engines

[HerkHealer]

Originally Posted by H_T

This page has a good breakdown of the differences:

https://bmwtuning.co/bmw-n63-vs-n63t...tu2-vs-n63tu3/

Notes for the TU3:

Electric arc wire sprayed cylinder walls
Piston skirt coating
Crankshaft re-balanced with new main bearing shells
Forged rods from S63TU4
Larger turbochargers with electrical blow-off valves
Updated ignition system, taken from modular B series engines

They also beefed up the transmission to handle the extra power.

[23109VC]

Originally Posted by HerkHealer

They also beefed up the transmission to handle the extra power.

I would've loved to have picked up a 2020 model but when I was shopping all the CPO's were 2018's. I can't complain - only months after I bought my car for a crazy deal the used car market went nuts!! I've seen cars exactly like mine selling for a whole shit load more than I paid!

I have three more years on my CPO coverage. Hopefully by then the car market has calmed down and I can pick up something even faster!

[SteveinArizona]

Originally Posted by Joe-BMW33

Whenever BMW introduces a new V8, the first generation of it is a nightmare.

The first year of any car is usually a nightmare. Best to wait at least a year. All those new components (and matching them to existing ones) creates opportunities for errors. These often get picked up and fixed in years 2 and 3.