[TW666]

Currently leasing 435dGC but want to buy a 2017 2 Door. Do about 10k/12k miles a year and will keep car at least 8 years. My head says 435d (4wd, economy) but heart says 440i (b58 petrol high mileage ?). Given the bad press diesel is getting and higher maintenance costs at high miles (DPF, injectors etc) what do you consider pros and cons. Also been in m140i but wondered how B58 performs in heavier body compared to massive torque of 435d which provides effortless performance.

[Smee]

i have a 435d and i do 6 to 8k a year!! goes against everything everyone says about owning a diesel although i dont fully get their argument about running costs

DPF in these cars are pretty decent not like the audi days when they took and engine not designed for DPF and bolted on on to find it fill up every 5 seconds. also the 435d is euro6 so also another good thing.

as for 440i i cant comment. the only thing that draws me to it over my 435d is the noise but to be honest cruising at 70 in either is a quiet experience.

out of the 2 id go 435d but if you said to me 240i. then maybe id go that route.

[NISFAN]

I'm not sure I share your concern over long term costs of diesels. My 30d is at 130,000 fault free miles. No DPF issues, although it does long runs which probably clean it out well.

Fuel consumption between 440i and 435d will be closer than you think, driving like for like. However the diesel will always be bland which encourages more relaxed driving. The petrol requires unnecessary down changes and a dash to the redline.
At 10-12k miles, it's not going to be a wide cost difference.

At the end of the day, they are both great engines, so your personal view will be the decider.

I'd go 440i

[TW666]

Thanks for the feedback, the 240i is a bit too small in the back seats for me. Also in my view the standard 18 x 8 inch wheels look a bit small.

[Nobby Clark]

435d x-drive. We all know in the real world it's about getting the power on the road and traction in the corners.

[Nobby Clark]

Originally Posted by Incontinentia Buttocks

440i.

Diesel cars are obsolete. Can you live with all the child respiratory problems you're causing driving diesel?

You're think about it wrong. You should encourage stopping producing children as they pollute far more than a 435d.

[Ronstein]

Originally Posted by Incontinentia Buttocks

440i.

Diesel cars are obsolete. Can you live with all the child respiratory problems you're causing driving diesel?

For modern diesels (Euro 6), the Euro6 Standard for diesels allows for emissions of 25% more NoX and 50% LESS Co2 than petrol. Particulate limits are identical

Euro emissions standards for diesel cars

Euro standard

CO NOx PM
Euro 1 July 1992 2.72 - 0.14
Euro 2 January 1996 1.0 - 0.08
Euro 3 January 2000 0.64 0.50 0.05
Euro 4 January 2005 0.50 0.25 0.025
Euro 5a September 2009 0.50 0.180 0.005
Euro 6 September 2014 0.50 0.080 0.005


Euro emissions standards for petrol cars

Euro standard

CO NOx PM
Euro 1 July 1992 2.72 - -
Euro 2 January 1996 2.2 - -
Euro 3 January 2000 2.3 0.15 -
Euro 4 January 2005 1.0 0.08 -
Euro 5 September 2009 1.0 0.060 0.005
Euro 6 September 2014 1.0 0.060 0.005

[NotGotABimmer23]

The petrol, faster, sounds better l, handles better and is more fun. Mppsk obviously.

[JD6]

Originally Posted by Incontinentia Buttocks

You miss the point. A recent paper by the ICCT found that in real world conditions, diesel cars supposedly conforming to Euro VI emitted particulates at double the rate of the latest, Euro V trucks and buses. NOx is of course the killer.

The diesel party for cars is over. Move on

NOx is a killer, but so are particulates, and the 40i engine is likely to be a fair bit worse than the 35d in that respect since it currently has no filter. As the media can only cope with one issue at a time, the current focus is NOx. Next year is may be particulates - petrol engines without particulate filters may be what everyone is scared of.

https://www.nature.com/articles/s41598-017-03714-9

Back to the OP's main point - he needs to take an extended test drive a 440i. The cost difference between the two isn't huge, so it should come down to preference.

[KCH1984]

When I bought my 30d there wasn't much in it cost wise between that and a 35d/40i. Fuel economy I'd expect the 35d to be punished less by enthusiastic driving. My experience of the older 35i showed that decent economy was achievable on a run, but fell off significantly if the performance was used in any way. Not so with the diesel.

That said, was I buying now I'd be swayed by current anti-diesel sentiment and probably go for the 40i. Living in Scotland I do think the lack of AWD is to the 340i's detriment which might push me back.

Advice above is sound though. OP knows all about the 35d so should get an extended test with the 40i to see what it's like to live with. MPPSK equipped 440i makes a compelling case to the heart though...

[Rudz]

If u took an extended test, you wouldn't go to a 335d for sure

I come from a 335i, my current 335d even though is rapid is missing a soul, I crave for a petrol, but I do 20k miles a year so not viable option for my situation

[M3anLantern]

My brother has a 435d and I've a 440i. I average about 30-34 on the motorway where he averages 36-40. In town he's averaging about 20 mpg while the 40i (Albeit with continuous downshifting and redlining) averages about 15.

In the long run, there's not much in it in terms of mpg. As others have said, how much is the noise worth to you? To me, it makes the car.

I can't enjoy driving the 435d since I've had my 440i cos you don't feel the speed as much when you're missing all the sound. But that's just my opinion. A test drive, as mentioned before, should quickly tell you what's better!

[Addinuff]

Dont forget car tax rates!

[Oompah]

Lots of people are talking here about the intoxicating noise of x40.
Honestly, I have no idea what's all about. When I was looking for a new car 3 months ago, I looked at x40i but I found the engine/exhaust note just unacceptable. Even mppk doesnt take it to the level I would like it to be. Canny and "forced".
I would take n54 sound any day, even my old e91 325i with mperformance exhaust sounded 10 times better than x40 with/without mppk.
Quite frankly both cars (petrol and diesel) in my opinion sound pretty sh**t.
Won't even try to compare it to my s8 beacuse this wouldnt be fair.
I guess I am a little bit spoiled when it comes to the sound.
Keeping this in mind I would not look into buying 340/440/335d for the sound because it's not there. Entire f3/4 line lacks character if you ask me.

Then there is the whole diesel/petrol fan war that I couldn't care less about.
I don't really care about the whole diesel witch hunt either, car is euro6 and by the time the regulations will change, I will be on another car.
For now, I will just enjoy mountains of torque + xdrive + running cost.
However, it could be potentially a very different conversation if you thinking of keeping the car for 8 years...

[JD6]

Originally Posted by thelowkick

I would take n54 sound any day, even my old e91 325i with mperformance exhaust sounded 10 times better than x40 with/without mppk.
Quite frankly both cars (petrol and diesel) in my opinion sound pretty sh**t.
Won't even try to compare it to my s8 beacuse this wouldnt be fair.
I guess I am a little bit spoiled when it comes to the sound.

Is there anything synthesised with the S8 noise, or is it all natural?

I believe some Audis use an external speaker built into the exhaust system. Not sure whether they also play a sound through the internal speakers as BMWs tend to?

[Oompah]

This one is still all natural.

Originally Posted by JD6

Is there anything synthesised with the S8 noise, or is it all natural?

I believe some Audis use an external speaker built into the exhaust system. Not sure whether they also play a sound through the internal speakers as BMWs tend to?

[JD6]

Originally Posted by thelowkick

This one is still all natural.

I'm impressed that it's natural. They do sound good.

FWIW here is a link to the external speaker system added to a 35d engine, which sounds good to me too, although I generally have reservations about adding fake noise

[RustyBitz]

Originally Posted by JD6

I'm impressed that it's natural. They do sound good.

FWIW here is a link to the external speaker system added to a 35d engine, which sounds good to me too, although I generally have reservations about adding fake noise

[creepy coupe]

My 435d was the best all-rounder I've ever had. If you can live without the engine/exhaust note. I recommend one. I couldn't. But we all have different requirements.

[GEP77]

Originally Posted by Rudz

If u took an extended test, you wouldn't go to a 335d for sure

I come from a 335i, my current 335d even though is rapid is missing a soul, I crave for a petrol, but I do 20k miles a year so not viable option for my situation

I had a 335d and now a 440i and do 25k a year. The only thing that would make me go back is 4wd, and only then in very specific conditions.

A 440i GC with MxDrive would be pretty close to being an ideal car.

[TheLiverBird]

I've just, after 2¾ years, handed back a 435D for an S5 (obvious similarities with 440i apart from 4 wheel drive).

My very early (had S5 just over a week) conclusion (ignoring the BMW v Audi stuff) is I'm never going back to diesel - and that's despite nearly 40mpg turning to 25-30mpg currently. My last petrol was an '07 Golf GTI, sold in 09, after which I've had a series of Merc, BMW and Audi, two and three litre Diesel engines. I now wish I hadn't waited nearly a decade to go petrol again! Just my opinion of course.

[225]

This is my first petrol for a while (340 with tuning box) and I had forgoton how much I like a powerful petrol lump. The sound and expereince of revving that 6pot to 7k rpm is very addictive.

The fact it has a load of torque even as standard make for a great drive. Ok not 335 levels but the ability to red line it or pootle happily and get decent mpg is a winner.

Unless needs must I wouldn't go back to a derv. The cold start up noise alone should sway you!