[toicy4ya]

Sup guys,

I'm looking into possibly purchasing a 2018/2019 430i or 440i. Can anyone offer some advice on the pros/cons of each, which offers the better engine, reliability etc? I have searched the forum but haven't found to much info on the reliability of these models.

Additionally, if anyone who owns a convertible can offer their experience with using a convertible or any issues faced they may have faced that would be great!

Thanks in advance.

[cfm56d7b]

My 2017 BMW 440i GC with 33K miles has been trouble free for 4+ years.

B48 (4 cylinders) in 430i and B58 (6 cylinders) in 440i are based on the same modular engine architecture. B58 = B48 + 2 extra cylinders + extra software.

Depending on the price and options, both vehicles will serve you well.

It would be difficult for me to forego the silky smooth B58 with 6 cylinders. But that's a purely personal choice.

[Alvin Mpower]

17 440i coupe owner here, currently 24k miles, bought it 7 months ago with 16k miles, just can't stop driving it its so much fun.
Coming from a C300, I would never go back to a 4 cylinder engine again. B58 is probably the most reliable engine rn in BMW line up and the tuning potential is crazy.
you can also get a manual if that's what you desire too.

[N1rve]

Originally Posted by toicy4ya

Sup guys,

I'm looking into possibly purchasing a 2018/2019 430i or 440i. Can anyone offer some advice on the pros/cons of each, which offers the better engine, reliability etc? I have searched the forum but haven't found to much info on the reliability of these models.

Additionally, if anyone who owns a convertible can offer their experience with using a convertible or any issues faced they may have faced that would be great!

Thanks in advance.

I believe the B58 is a more reliable engine than the B48. There’s like some detrimental issue on the B48 and has a recall I believe. The B58 is in the Toyota Supra and Toyota combed through this motor to make sure it meets their reliability standards. If Toyota is willing to put their reputation on the line for a BMW motor, you would think it’s a pretty good motor.

Also, BMW is known for making I6 motors, not I4 or V8s. I6 is their bread and butter. This goes for all 6 cylinders vs 4 cylinders, if you drive the hell out of a 4 banger, you need to really push it to get all the ponies out where on the 6 cylinder you don’t need to drive it as hard to satisfy your need for speed. More wear and tear if you rev the hell out of it and drive the hell out of it. There’s no such thing as too much power.

The I4 is better for fuel efficiency but I don’t think people drive these cars for fuel economy... if you want fuel economy you buy a Prius. I wear my 16 MPG average like a badge of honor. It’s like a middle finger to Prius and the like. I see it like this “Save fuel” but in my perspective... “Yes, save fuel, more for me”.

Lastly, it comes down to “red light jealousy”. If you see a 440i next to you, while you’re in a 430i, will you be like “I wish I had a 440i” or “I wish I had more power”. I don’t think I’ve ever ran into that issue with my F82 M4. So much power, but with great power comes great responsibility. If you can’t handle a faster car and don’t have self control, you should probably get the 4 cylinder and hopefully that keeps you back from speeding too hard.

[740I_yeye]

Originally Posted by N1rve

I believe the B58 is a more reliable engine than the B48. There’s like some detrimental issue on the B48 and has a recall I believe. The B58 is in the Toyota Supra and Toyota combed through this motor to make sure it meets their reliability standards. If Toyota is willing to put their reputation on the line for a BMW motor, you would think it’s a pretty good motor.

Also, BMW is known for making I6 motors, not I4 or V8s. I6 is their bread and butter. This goes for all 6 cylinders vs 4 cylinders, if you drive the hell out of a 4 banger, you need to really push it to get all the ponies out where on the 6 cylinder you don’t need to drive it as hard to satisfy your need for speed. More wear and tear if you rev the hell out of it and drive the hell out of it. There’s no such thing as too much power.

The I4 is better for fuel efficiency but I don’t think people drive these cars for fuel economy... if you want fuel economy you buy a Prius. I wear my 16 MPG average like a badge of honor. It’s like a middle finger to Prius and the like. I see it like this “Save fuel” but in my perspective... “Yes, save fuel, more for me”.

Lastly, it comes down to “red light jealousy”. If you see a 440i next to you, while you’re in a 430i, will you be like “I wish I had a 440i” or “I wish I had more power”. I don’t think I’ve ever ran into that issue with my F82 M4. So much power, but with great power comes great responsibility. If you can’t handle a faster car and don’t have self control, you should probably get the 4 cylinder and hopefully that keeps you back from speeding too hard.

Sorry to ask if you dont mind, but whats the issue with the b48's that are being recalled?
thanks

[GreenF30N26]

Originally Posted by 740I_yeye

Sorry to ask if you dont mind, but whats the issue with the b48's that are being recalled?
thanks

N1rve is confusing the N20 and the B48. I've not heard anything regarding any major issues with the B48 so far.

[Silverlining_m2]

I have a 435 and not a 440, but if you have the choice, definitely take the 6 cylinder car. Not that bmw doesn't get a lot out of their 4 bangers, but you can get a lot more out of a 6. Better for tuning as well. Sounds better, runs smoother, and pulls harder. In stock cars, from a stop it feels like there's not THAT much difference in acceleration tbh. But going 80 down the highway and needing to step on it so you don't get boxed in?

HUGE DIFFERENCE

[N1rve]

Originally Posted by 740I_yeye

Sorry to ask if you dont mind, but whats the issue with the b48's that are being recalled?
thanks

Originally Posted by GreenF30N26

N1rve is confusing the N20 and the B48. I've not heard anything regarding any major issues with the B48 so far.

I'm not sure what the outcome was since I don't own a B48, but this is something I read not too long ago.

https://f30.bimmerpost.com/forums/sh....php?t=1663339

[cfm56d7b]

Originally Posted by N1rve

I'm not sure what the outcome was since I don't own a B48, but this is something I read not too long ago.

https://f30.bimmerpost.com/forums/sh....php?t=1663339

This technical advisory is over 1.5 years old. Long gone and addressed.

I would not worry about this at all.

[luckstr]

Originally Posted by toicy4ya

Sup guys,

I'm looking into possibly purchasing a 2018/2019 430i or 440i. Can anyone offer some advice on the pros/cons of each, which offers the better engine, reliability etc? I have searched the forum but haven't found to much info on the reliability of these models.

Additionally, if anyone who owns a convertible can offer their experience with using a convertible or any issues faced they may have faced that would be great!

Thanks in advance.

2017 440i convertible here. Thanks to Covid and the fact that since I retired I really don't do that much driving, I only have 20,000 miles on car. Never had one issue with convertible hard top and I still find room for other stuff when top is down.
Am not very happy with mileage, it's almost 4mpg less than my C5 Corvette gave me after 140,000 miles. I always drive in comfort mode and A/C is on most of time.
Luckstr

[Machinebuilder]

Its been a great car for me. When looking at cars watch the spec and be flexible. There are not many vehicles in good shape. The 6 cylinder is preferred but the deals are on the 4 cylinder version so its a tough choice.

[Elvisfan]

Originally Posted by toicy4ya

Sup guys,

I'm looking into possibly purchasing a 2018/2019 430i or 440i. Can anyone offer some advice on the pros/cons of each, which offers the better engine, reliability etc? I have searched the forum but haven't found to much info on the reliability of these models.

Additionally, if anyone who owns a convertible can offer their experience with using a convertible or any issues faced they may have faced that would be great!

Thanks in advance.

https://f30.bimmerpost.com/forums/sh....php?t=1800792
More info on convertible.

[bimma21]

Originally Posted by toicy4ya

Sup guys,

I'm looking into possibly purchasing a 2018/2019 430i or 440i. Can anyone offer some advice on the pros/cons of each, which offers the better engine, reliability etc? I have searched the forum but haven't found to much info on the reliability of these models.

Additionally, if anyone who owns a convertible can offer their experience with using a convertible or any issues faced they may have faced that would be great!

Thanks in advance.

I'm sure you've had many answers, just wanted to put what I've experienced from owning a 2016 model 440i. I brought it at 37500 miles and right now it's around 45000 miles. It's a very fun car to drive, and from what I've seen and heard it has great potential in tuning as the b58 engine is very reliable but under tuned. I personally would say go for an M4 if you want more sporty and more power etc. Or if you do have the 440i in Xdrive I'll 100% go for that, as more grip and better 0-60 times. Here in the UK we rarely see sunlight so it always has traction issues although I have P4S tyres all 4. I haven't had issues until a month or so ago. It seemed reliable up until I started noticing a noise that sounded like a "supercharger", I assumed it was from the turbo and only happened when I accelerated hard (put my foot down) it occurred occasionally especially if I had. driven in sport for a bit of time but as days went past it became more noticeable. After some googling, some people on threads said it was due to the turbo being hot. However, I don't like taking chances with parts like this so I took it to BMW recently for them to check it out and got a call the same day saying the turbo needs replacing, thankfully it was under my extended warranty (get warranty if you can btw), the only downside is that I need to wait for the part to arrive from Germany now :P.

[chowser51]

My '18 F33 430i with b48/b46 engine went to 73k miles and was great. Never had an issue with the top either. I traded it in a month ago, I kind of miss it. I found a '19 X2 M35i with 3800 miles for a killer deal so I traded the F33 in.

[Elvisfan]

Originally Posted by toicy4ya

Sup guys,

I'm looking into possibly purchasing a 2018/2019 430i or 440i. Can anyone offer some advice on the pros/cons of each, which offers the better engine, reliability etc? I have searched the forum but haven't found to much info on the reliability of these models.

Additionally, if anyone who owns a convertible can offer their experience with using a convertible or any issues faced they may have faced that would be great!

Thanks in advance.

As long as it works, there are no disadvantages with the convertible. There is plenty of trunk space. The top moves out of the way when down to load larger items and put things towards the front.

[toicy4ya]

Thanks for all the feedback and useful information guys, I greatly appreciate it!