discussion BMW X5/X6: N57 30d and 40d (F15/F16) discussion

msm

Well-known member
There seems to be various older and related threads discussing this, but just reviving as there's obviously been more owners/workshops that have experience as time goes on.

For context, I'm still debating performance car vs SUV and if I go the SUV route, my options are the F15/F16 X5/X6 (2015 to 2018 or so). Not considering a M50d, as that seems to be quite different and carries some "M tax" goodies and associated costs over the more "pedestrian" 30d/40d models... Or am I completely wrong about the M50d???

Some points that I have been debating and want to open this up to those that have some experience. Please feel free to add you input/comments/remarks:

1) X5 vs X6 (F15/F16 only): Personal preference but I don't need the extra space and actually like the X6 more. Also, for similar prices (around R500k or so - give or take), the X6 seems to have more options thrown in (generally speaking). However, the issue is that the F16 X6 does not come in the 30d in SA - only 40d and up. All other service related items from brakes, engine, tyre sizes, etc seem identical between the X5 and X6 - obviously, body parts are different. Lastly, lots more X5's for sale, than X6's - hence, not fixated on the X6, if a decent well-spec'ed X5 comes by. But X6 is preference.

2) 30d vs 40d: Here's where this conflicts with the first point. I'm actually indifferent to the engines and it seems pretty clear that the 30d is the sensible option over the 40d, especially for older cars out of motorplan. But, the X6 only comes in 40d. BTW, whatever car I choose will go for preventative tuning/mods - e.g. decat, egr delete in s/w, swirl flap delete in s/w, gearbox oil service, etc to ensure that all the potential problematic areas are addressed. So I guess, it's X5 30d or X6 40d - and the question is, how much more expensive will the 40d be up to 200k and possibly beyond. Again, obviously, it boils down to a specific car as well - a badly abused car will give more issues. Should I stick with the 30d. How are older/higher mileage 40d's doing and anyone replaced turbos yet, as that is the fundamental difference. And yes, I'm aware that there seem to be other minor technical differences between these motors, but the major stuff seems to be mostly similar (unlike the M50d)

3) Mileage: So not unique to the N57, but there's massive price differences between cars around or just under 100k KM and those over (say 130k - 140k KM) - over R100k in some instances for the same year models. As an example, a R450k car will have 130xxx and a R600k car will have 90xxx - is the R150k "premium" worth it or just get the higher mileage and save the rest for a rainy day (assuming cars are similar otherwise). If buy and keep it for a few years and maybe drive about 50k - 100k more, I'm not sure if the initial 100k+ is worth it - open to comments on this point. Both would require the same initial preventative stuff and the potential up-front cost saved goes into a bigger kitty fund for things that break. I've also seen a few way beyond 200k KM (not that I would buy them), but they still seem to be going strong - on face value at least. Hence, is a slightly higher mileage/clean/well maintained car worth it in terms of saving, if I'm going to do all the preventative stuff either way. One of the main reasons for going diesel is that theoretically they can handle higher mileages if well maintained. Yes, there's the curveball that a higher mileage car driven mainly on the open road is better than a car used for short school runs/town trips - but when buying 2nd hand, you don't always have this info, so the mileage question becomes more generic.

Anyone been in a similar boat? Or have more experience on this topic. Please feel free to share your inputs, advise or thoughts.
 

Nishcat_M140i

///Member
Since you a bit undecided between a performance car and an SUV, why not go for a performance SUV ? That way, you'll have the best of both worlds.

Seeing that you looking at X5s and X6s, why not something like an F85 X5M ? Been looking at these and the X6Ms for some time now and they sitting anywhere between R600k all the way to a bar depending on mileage and specs. The M50d is awesome, my dad use to have one before the M50i. The thing is, maintenance on them will be significantly higher in comparison to the 30d and not too far of from M maintenance, which is why I would rather go for an M one time.

 

AshG108

///Member
Since you a bit undecided between a performance car and an SUV, why not go for a performance SUV ? That way, you'll have the best of both worlds.

Seeing that you looking at X5s and X6s, why not something like an F85 X5M ? Been looking at these and the X6Ms for some time now and they sitting anywhere between R600k all the way to a bar depending on mileage and specs. The M50d is awesome, my dad use to have one before the M50i. The thing is, maintenance on them will be significantly higher in comparison to the 30d and not too far of from M maintenance, which is why I would rather go for an M one time.

Funny enough that you say this, my brother in law went through the same dilemma as @msm, he went to get a 30d X5 F15 and came home with a 40d, the price difference and options etc however he was not looking for a higher mileage and out of plan car.

Then when he was trading up the 40d, he looked at the X6 and X5 again and the newer one was not released yet. He spent a good 3 months looking at all different brands etc and in the end, he wanted the M50d because where you do go from 40d unless upwards and between the M50d and the X5M...the amount of power, petrol engine gurlges, burbles and fun and SUV all in one made sense, also the pricing was very close too.
He had never been happier with that purchase and when he sold the X5m, he actually came out with a decent profit and it took a few days on autotrader and it was gone.
But all in all, depends on what one's purpose and needs are for the vehicle, spending R600k upwards and in the F-series I will go X5M/X6M or a VERY low mileage 30d/40d if they come across but I am bias as well towards the M lol
 

Nishcat_M140i

///Member
Funny enough that you say this, my brother in law went through the same dilemma as @msm, he went to get a 30d X5 F15 and came home with a 40d, the price difference and options etc however he was not looking for a higher mileage and out of plan car.

Then when he was trading up the 40d, he looked at the X6 and X5 again and the newer one was not released yet. He spent a good 3 months looking at all different brands etc and in the end, he wanted the M50d because where you do go from 40d unless upwards and between the M50d and the X5M...the amount of power, petrol engine gurlges, burbles and fun and SUV all in one made sense, also the pricing was very close too.
He had never been happier with that purchase and when he sold the X5m, he actually came out with a decent profit and it took a few days on autotrader and it was gone.
But all in all, depends on what one's purpose and needs are for the vehicle, spending R600k upwards and in the F-series I will go X5M/X6M or a VERY low mileage 30d/40d if they come across but I am bias as well towards the M lol

Hands down agree with absolutely everything you mentioned here bro.

These X5/6Ms are actually pretty nice cars. I don't think we gonna get anything better within that specific price range because they really are a lot of car for the money. The only problem is, replacing a car like the X5M is gonna be very tough, because as you said, where do you go to after something as amazing as that and does the job that well. Its hard, especially considering inflation, because the X5/6M Comp is still more than double the prices of the F85/6 X5/6Ms are currently. Are they double the car for the money ? I wouldn't say so but I do love them both.

2 years ago, my mom was set on a brand new Tiguan R, but she ended up picking up a 2021 X3M Comp (last of the pre lcis) with 6k mileage at the time and she absolutely loves it. She doesn't plan on letting it go anytime soon, but when the time comes, it will be tough to replace that car, especially knowing BMW don't plan on making another X3M, its just the new M50 which I feel is more of an M40i replacement.

The X5 30d will always be a safe bet though, but as you mentioned, it all comes down to your needs and purposes at the end of the day.
 

msm

Well-known member
Thanks for the input gents.

Personal preference, but the choice would still be performance car and SUV - not really any combination of those 2. If SUV, I'd prefer the 30d/40d "plain jane" models instead of the M variants. Simply down to more sensible running costs in the long run.

I've also phoned/asked around and the consensus is that it is much over muchness between the 30d/40d - but the M50d is quite different and much riskier as a long term used proposition. As for the X5M/X6M, oddly doesn't appeal to me. Phenomenal cars, but not for me.
 

MLorgat

Member
After looking at all the options, I settled on an X5 30d. I couldn't find anything that beats it overall. whether it be Power, reliability, comfort, space, efficiency or even parts availability, I don't think there's a better SUV for the money. We've got a few in the family from the first Gen E53 till the newer LCI, and all of them have proved to be rock solid for the most part. Aunt and granddad currently both have 2016 F15 30D's. 1 is around the 200k mark, and the other is about 140k (both still drive like new)

If you ever do want extra power (a stage 1 remap will give you about 30% Increase in Torque and KW +/-), which is basically 40d power. a stage 2 tune and you're in M50d Territory.
 
Top