[TurtleBoy]

Originally Posted by dwwStL

Yesterday someone didn’t know the 48 volt system existed and today they are an expert. These are people who show up at car forums and not people worth engaging.

In general I agree with that but many times they post false/misleading information that should be corrected since folks come here looking for help and accurate information. For the poster in question that seems to happen quite often.

[PNWM50I]

Originally Posted by Hydrocarbon

Hi all,

I’m looking at low mileage 2023 CPO X5s and trying to decide between the M50i and xDrive40i. I would likely keep the car for 4-6 years, so I am curious about the relative reliability of the two drivetrains, given I would be on hook for a year or two once the warranty ends.

I have heard mixed reviews on the turbo V8, but curious how much of an issue it actually is and some estimate of the degree to which it’s more expensive to maintain.

Any/all input appreciated.

I’ve had my M50 for nearly 3yrs. Hitting 26k. No issues for me and I bought the extended service coverage for 5 yrs. No costs out of pocket for services. As for mods…I’ve spent too much! Good luck with your decision.

[BlkGS]

I am not infallible. I just post my opinion,.based on what I know at the time. If people know more than me, I welcome their input. I think people are on here looking for, and to help.

If that's not good enough for some.people, oh well?

[dwwStL]

Originally Posted by TurtleBoy

In general I agree with that but many times they post false/misleading information that should be corrected since folks come here looking for help and accurate information. For the poster in question that seems to happen quite often.

Of course you are correct. It’s important to keep the record clean.

[Photographer918]

Originally Posted by BlkGS

You would notice the difference every time you're in traffic. The zipping power in traffic of the V8 is IMMENSE. You see a gap, you can close it. You see a yellow light, you can make it.

Let’s hope you’re never involved in an accident with injury and sued - that statement is gonna play well in a courtroom.

You’re talking about driving on public roads as if you’re on a racetrack. You’re advocating not stopping for a yellow - do you even hear yourself?

[Photographer918]

Assuming you’re not going to take the car to the track, drive both. They feel quite different in corners. The M50i has way more straight line power - but the 40i isn’t exactly slow. Drive both, then decide which one you’d prefer to drive.

40i - longer range, maybe as much as 50% more miles between fill ups.
40i feels like it’s a lighter front end.
50i - 156% of the 40i horsepower and about 165% of the torque, while also carrying 1st 110 percent of the weight of the 40i. Power increase is more than enough to offset the weight - but the weight really changes how the front end of the car feels in corners. So drive both - and then choose.

I really like both options. If money were no object, I’d probably add an M50i X6 to sit next to my 40i X5. Good luck and have fun!

[PNWM50I]

Originally Posted by PNWM50I

I’ve had my M50 for nearly 3yrs. Hitting 26k. No issues for me and I bought the extended service coverage for 5 yrs. No costs out of pocket for services. As for mods…I’ve spent too much! Good luck with your decision.

I should have added my wife drives a 40i and we’ve had it for 3.5 yrs. Plenty quick and has served us well.

[wyatth]

I feel like this is one of those cases where "if you have to ask" ... but then the answer is 40i.

If you want the V8, you do the V8 even though you know it's going to be more up front, a bit more to maintain, and more to run. If you try to rationalize it, the 40i is more than adequate and objectively logical.

[poison]

Originally Posted by BlkGS

Toyota and BMW reliability are not in the same league.

I dunno, some Toyota are bmw's. 😉 The point is the 48v hybrid system isn't inherently less reliable, which is the claim that was made.

If you want to argue that bmw is less reliable than Toyota, that's fine, but it's not the same point.

[BlkGS]

Originally Posted by Photographer918

Let’s hope you’re never involved in an accident with injury and sued - that statement is gonna play well in a courtroom.

You’re talking about driving on public roads as if you’re on a racetrack. You’re advocating not stopping for a yellow - do you even hear yourself?

You've never driven in FL, have you?

[BlkGS]

Originally Posted by wyatth

I feel like this is one of those cases where "if you have to ask" ... but then the answer is 40i.

If you want the V8, you do the V8 even though you know it's going to be more up front, a bit more to maintain, and more to run. If you try to the rationalize it, the 40i is more than adequate and objectively logical.

I agree, you buy the M50i because you want it. You buy the 40i because you just really like BMWs.

FWIW, the range in my M50i is consistently about 400milea after a fill up. That's all city driving. I'm very impressed and satisfied with it's fuel economy. No, it isn't a fuel sipping Prius, but that's not what I wanted. The fuel economy of the V8 is honestly better than I anticipated, 17/18 city is not half bad at all.

One thing that maybe comes into play, the V8 barely has to rev to get around town slowly. Normal congested driving, it barely goes over 2000-2500 rpm. If I used eco pro mode ever, I could probably get it to shift even sooner. I can't comment on what the 40i is like in those cases, but i can say that in our Ecoboost expedition and the M50i, if you drive it lightly you can keep them out of boost and considerably improve efficiency.

[poison]

When I drive the 40i normally, not 'on it', it doesn't Rev over 2500. I'm getting over 24mpg average overall in mixed driving, and mostly freeway trips are over 30mpg. I live in LA, so loads of stop and go congestion.

It's kind of blowing my mind how a 400hp, 5000lb truck can get better mileage than my previous 270hp, 3200lb Ford focus st. Technology......

[Hydrocarbon]

Originally Posted by poison

When I drive the 40i normally, not 'on it', it doesn't Rev over 2500. I'm getting over 24mpg average overall in mixed driving, and mostly freeway trips are over 30mpg. I live in LA, so loads of stop and go congestion.

It's kind of blowing my mind how a 400hp, 5000lb truck can get better mileage than my previous 270hp, 3200lb Ford focus st. Technology......

Helpful real world feedback, thanks. Currently have a late model Japanese sedan that doesn’t have enough power to get out of its own way yet manages only ~20 mpg.

[dwwStL]

Originally Posted by Hydrocarbon

Helpful real world feedback, thanks. Currently have a late model Japanese sedan that doesn’t have enough power to get out of its own way yet manages only ~20 mpg.

I'd driven Jeep Grand Cherokees for years and decided to give the X5 40i a shot. Test drove it and was like a kid in a candy store. The performance and torque are fantastic. It performs very well and gets great mileage. I'm al little embarrassed by how much I like driving my 40i. The ride quality on road trips, and the fit and finish of the coachwork are all excellent. You will love it.
All my best.

[1024X5]

We had a 19 xline 4.0 and really wanted an MSport. Test drove a 2021 M50 with low miles and loved the power and sound but essentially it was the same car we already had. For the same monthly payment we were able to get a 24 MSport 3 years newer with the warranty. That was our situation.
As far as power…the M50 felt fast….the 4.0 is plenty quick and currently reads 600 miles between fill ups. My wife baby’s the drive lol

If I was the primary driver I would probably want the M50 or M60.

[TurtleBoy]

Originally Posted by 1024X5

We had a 19 xline 4.0 and really wanted an MSport. Test drove a 2021 M50 with low miles and loved the power and sound but essentially it was the same car we already had. For the same monthly payment we were able to get a 24 MSport 3 years newer with the warranty. That was our situation.
As far as power…the M50 felt fast….the 4.0 is plenty quick and currently reads 600 miles between fill ups. My wife baby’s the drive lol

If I was the primary driver I would probably want the M50 or M60.

Those 4.0's are actually rare, most of the times they build them without the period.

[Dandle]

When I was changing from an X3 M40i the X5 40i and M50i were my choices. I loved the B58 in the X3 but as soon as I drove the 40i I knew it wasn't the car for me. The reduction in power with the heavier car just made it a bit to boring, the good part of the B58 just wasn't there in the X5.
Purchased the M50i and so far really pleased with it and happy with the decision, economy wise it's about 3-4mpg(UK) worse than the X3 over the same journeys but a lot more powerful.

[hotvee]

I have a 50i and for a long time (almost 2 months) I had a 40i as a loaner. Comparing the two, I didn't notice any lack of power in the 40i when driving in the city. And yes, it feels a bit lighter, and the range on a full tank increases by 100-150 miles. The sound of the l6 is clearly less pleasant than that of the v8. If you can get all the options you want in both the 40i and the m50i - it essentially comes down to whether you want to make a rational purchase (40i) or an emotional one (m50i). Cost-wise (gas, maintenance, etc), the 40i will definitely be more affordable. But if you want v8 sound with faster acceleration and are willing to pay for it, go with the m50i.

[swainbmw]

Originally Posted by hotvee

I have a 50i and for a long time (almost 2 months) I had a 40i as a loaner. Comparing the two, I didn't notice any lack of power in the 40i when driving in the city. And yes, it feels a bit lighter, and the range on a full tank increases by 100-150 miles. The sound of the l6 is clearly less pleasant than that of the v8. If you can get all the options you want in both the 40i and the m50i - it essentially comes down to whether you want to make a rational purchase (40i) or an emotional one (m50i). Cost-wise (gas, maintenance, etc), the 40i will definitely be more affordable. But if you want v8 sound with faster acceleration and are willing to pay for it, go with the m50i.

Most of my BMWs over the years from 540s to m5 to 7 series we’re all V-8. I contemplated on buying the V8 in the X5 but when I got in it and drove the 6 cylinder I didn’t even bother driving the v8 for the extra 10,000 plus was not necessary to me thw 40i has plenty of power And the gas mileage is amazing and BMW V8 don’t have a good track record with higher mileage. Most of them have to be pulled and resealed due to the heat soak oil leaks and not enough cooling off the engine.

[Gibson6594]

BMW makes this decision hard because the turbo 6 is pure bliss. I'm sure the 8 is phenomenal, but the 6 makes you question it's worth. I would surprised if anyone regrets getting the 8, but deciding to spend the extra money would give me pause when there is such a smooth alternative at a lot less cost.

[GoHerd]

Originally Posted by Hydrocarbon

Hi all,

I’m looking at low mileage 2023 CPO X5s and trying to decide between the M50i and xDrive40i. I would likely keep the car for 4-6 years, so I am curious about the relative reliability of the two drivetrains, given I would be on hook for a year or two once the warranty ends.

I have heard mixed reviews on the turbo V8, but curious how much of an issue it actually is and some estimate of the degree to which it’s more expensive to maintain.

Any/all input appreciated.

I've got 57K on a B58 in 540xi format and (knocks furiously on desk) never had any issues. Mix of interstate and city.
Experience with that motor def colored my decisiong making.
And price.

[Skimo612]

'20 X5 40 Msport here--use it for commuting, trips, towing boat. Obviously the V8 has more speed and torque, but man, that I6 with transmission sure drives great.