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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > diesel v petrol running costs



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      09-20-2012, 04:02 AM   #23
skelts
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If i didnt do over 20k miles a year i would be in a petrol engine (prob a C63 coupe) you cant beat the sound of a petrol engine but if you do alot of miles then a diesel makes sense. The torque on diesels now days makes them quite appealing too also with the good economy.
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      09-20-2012, 04:05 AM   #24
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this has got me thinking, what sort of yearly mileage does one have to do before a diesel works out the cheaper option overall i.e. considering additional buying cost, depreciation, sellability, fuel, servicing, maintenence etc??

just looking for some crude mileage figure for a 3 or 5 series beemer...
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      09-20-2012, 05:00 AM   #25
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I seem to do about 18 - 20k a year mainly B roads / motorway driving (fun driving )

I don't know if that warrants a Diesel but I bought my 335D after I saw how immense they perform and the mpg it returns – for a car that throws 286 bhp standard and 350 mapped and returns 35-40mpg still doesn’t fail to surprise me. MEGA was another reason haha. My god does his shifts swiftly!

Having said that, I have in this week alone had E46 shaped drivers in 330ci and 325d LCI stay on my tail at speeds I won’t mention I got so cheesed off how they managed to stay on my tail. Normally I’d put my foot down and the baby flies! I put my foot down and although it flew, these cars stayed with me and it bugs me to Death!!

Surely a 325d LCI and 330ci cant keep up ?!?! Maybe they were mappd / chipped – I don’t know but either way, I drive my car with a lot of joy and pride and generally like to think I am driving a gentle monster!

Does a 335d really need Mapping to say ‘Buh Bye’ to the likes of LCI models and older gen e46 330ci’s etc?

Rant over
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      09-20-2012, 05:12 AM   #26
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Your not driving it properly hahaha and them runflats dont help as it brings the traction light on all the time unless you disable it.

335d is not super quick as standard but when mapped its alot better and driven right it can pull from quite a few things.

Back to the miliage point of things i suppose its difficult to say what miliage makes sense for a diesel, if your thinking along the lines of a 320 then im guessing it would have to be alot but if your looking at a 335 then id say 20k+ would warrant a diesel.
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      09-20-2012, 06:21 AM   #27
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I drive a mapped 335d and yes it hurls you down the road at an astonishing rate but it does so with so little drama that you have no emotional appreciation of the speed.

I daydream about the throttle response and noise of a naturally aspirated straight six manual.

As far as running cost go, I get 28mpg around town and 40+ on longer motorway journeys. Not too much better than a 330i I suspect. The 335ds do have lots of niggles with their twin turbo set up, comparable probably to the petrols fuel injection / ignition issues, but expensive issues are fairly rare.
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      09-20-2012, 06:39 AM   #28
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Quote:
Originally Posted by dopper99 View Post
10-15 years ago I would have probably liked this but I've grown up since then. I dont know that many people that scream their engines up to 7K as it can get very tedious. I like to push the throttle and go. But everyone to their own.
I have a 330i- the only way to get that badboy to sing is to rev it up into the top of the rev range! Wouldn't do it any other way
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      09-20-2012, 07:08 AM   #29
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Quote:
Originally Posted by AWBimmer View Post
Having said that, I have in this week alone had E46 shaped drivers in 330ci and 325d LCI stay on my tail at speeds I wont mention I got so cheesed off how they managed to stay on my tail. Normally Id put my foot down and the baby flies! I put my foot down and although it flew, these cars stayed with me and it bugs me to Death!!

Surely a 325d LCI and 330ci cant keep up ?!?! Maybe they were mappd / chipped
Does a 335d really need Mapping to say Buh Bye to the likes of LCI models and older gen e46 330cis etc?
An older E46 330i should just about be able to stay with you. Considering they have 231bhp petrol engine (less faffing with gears), and weigh a good 160kg less than your car, you won't be saying "buh bye" to an E46 330i any time soon.

E46 330i = 155bhp/tonne
E92 335d = 171bhp/tonne

16bhp/tonne is very little and you'dneed monsterous amounts of power to leave someone behind completely, like i imagine you were expecting?

Don't forget, as cars get newer, their engines may churn out 15% more power, but then they always end up weighing 10% more than the previous model! The F30 i think has broken this mold a bit as it is very similar in weight to the E90.
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      09-20-2012, 07:50 AM   #30
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Quote:
Originally Posted by Subzero2003 View Post
An older E46 330i should just about be able to stay with you. Considering they have 231bhp petrol engine (less faffing with gears), and weigh a good 160kg less than your car, you won't be saying "buh bye" to an E46 330i any time soon.

E46 330i = 155bhp/tonne
E92 335d = 171bhp/tonne

16bhp/tonne is very little and you'dneed monsterous amounts of power to leave someone behind completely, like i imagine you were expecting?

Don't forget, as cars get newer, their engines may churn out 15% more power, but then they always end up weighing 10% more than the previous model! The F30 i think has broken this mold a bit as it is very similar in weight to the E90.
+1

Couldn't agree more. You would need a good 100bhp more to pull away from them in the way you are hoping unfortunately.

I've had frigging 2.0 diesel Golfs keep up with me (no doubt remapped) - and it does pee you off.
Maybe a remapped Golf still does not have the power of a 330d, but I assume its lighter so power-to-wieght is so much closer to the point where there would not be that much in it in a drag race.
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      09-20-2012, 11:09 AM   #31
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I've had frigging 2.0 diesel Golfs keep up with me (no doubt remapped) - and it does pee you off.
I had a Golf GT TDi 170 and they are pretty quick (even without a remap), but they are soulless uncomfortable things to drive and mine went wrong all the time, so don't be saddened that they can keep up with a proper car!

The Golf was my only Diesel experience, coming after an E46 330i, , but actually the fuel saving wasn't that great once the higher cost of diesel fuel was factored in, and I so missed the sound of a proper engine, so binned it off for an E90 325i. I did look at the six cylinder BM diesels, but after injector and DPF issues on the Golf, I didn't fancy any more of that. Personally, I'd have to be doing a very high annual mileage to want to buy a diesel again.
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      09-20-2012, 11:56 AM   #32
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Quote:
Originally Posted by MrBen View Post
I had a Golf GT TDi 170 and they are pretty quick (even without a remap), but they are soulless uncomfortable things to drive and mine went wrong all the time, so don't be saddened that they can keep up with a proper car!

The Golf was my only Diesel experience, coming after an E46 330i, , but actually the fuel saving wasn't that great once the higher cost of diesel fuel was factored in, and I so missed the sound of a proper engine, so binned it off for an E90 325i. I did look at the six cylinder BM diesels, but after injector and DPF issues on the Golf, I didn't fancy any more of that. Personally, I'd have to be doing a very high annual mileage to want to buy a diesel again.
I had a petrol Golf before my 330d and that was constantly going wrong, luck of the draw i guess!

Diesel is only an extra 5p a ltr so that doesn't really make much difference.
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      09-20-2012, 12:21 PM   #33
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Quote:
Originally Posted by Subzero2003 View Post
An older E46 330i should just about be able to stay with you. Considering they have 231bhp petrol engine (less faffing with gears), and weigh a good 160kg less than your car, you won't be saying "buh bye" to an E46 330i any time soon.

E46 330i = 155bhp/tonne
E92 335d = 171bhp/tonne

16bhp/tonne is very little and you'dneed monsterous amounts of power to leave someone behind completely, like i imagine you were expecting?

Don't forget, as cars get newer, their engines may churn out 15% more power, but then they always end up weighing 10% more than the previous model! The F30 i think has broken this mold a bit as it is very similar in weight to the E90.

Compare the 1/4 mile times (about 2 seconds difference?) and you will only have a few car lengths from 0-100. Given you are probably at 70-80 when you nail it you are unlikely to obliterate them in just 3-5 seconds of wide open throttle.

Depending upon how close they were following, you can also consider the reduction in drag as a result of being in your wake - drafting. To avoid this I nail the throttle and pull over to even things up.
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      09-28-2012, 08:11 AM   #34
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325 petrol E91 - only get about 23mpg mix of town driving and b roads. auto though
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      09-28-2012, 02:56 PM   #35
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For fucks sake don't get a diesel mate, life's too short. When you finally croak and get to the pearly gates and St Peter asks what you drive and you say 'I fill up at the black pump sir', you've got no fuckin chance.

After a lifetime of petrol I made one fuckin mistake with my last car, never again. Would you put a diesel engine in your GSXR1000? No thought not. QED.

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      09-28-2012, 03:16 PM   #36
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Quote:
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For fucks sake don't get a diesel mate, life's too short. When you finally croak and get to the pearly gates and St Peter asks what you drive and you say 'I fill up at the black pump sir', you've got no fuckin chance.

After a lifetime of petrol I made one fuckin mistake with my last car, never again. Would you put a diesel engine in your GSXR1000? No thought not. QED.

Alright, calm down. I'm no fan of diesel cars on the whole, but sheesh!
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      09-28-2012, 03:33 PM   #37
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On my first diesel. Love it, I leave petrol cars in my black smoke on the motorway! Love torque
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      09-28-2012, 03:42 PM   #38
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Yeah Dan. And do you enjoy your car sounding like a canal boat and the vibration through the touch points when youre idling in traffic....

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      09-28-2012, 03:44 PM   #39
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Main running cost is depreciation, not fuel. I bought a 330d for £30k and sold for £13k after 3 years: then a 335i from £22k to £10k in 3 years. Go figure.
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      09-28-2012, 04:17 PM   #40
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The 330d is of course the automotive cliterous.

Every cunts got one.....


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      09-29-2012, 03:00 AM   #41
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Quote:
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Main running cost is depreciation, not fuel. I bought a 330d for £30k and sold for £13k after 3 years: then a 335i from £22k to £10k in 3 years. Go figure.
these purchase figures arent the same so the depreciation figures dont stack up
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      09-29-2012, 03:55 AM   #42
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Ooh lot of hate for diesels, I used to hate them until I started driving them. No vibration and hardly any noise. Oh and its saving me money to buy beer with
I like it so thats all that matters
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      09-29-2012, 04:06 AM   #43
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Ooh lot of hate for diesels, I used to hate them until I started driving them. No vibration and hardly any noise. Oh and its saving me money to buy beer with
I like it so thats all that matters
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      09-29-2012, 04:47 AM   #44
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I do love diesels but after hearing the M135i i'm pretty much sold for my next car.

I think i'll miss the ability to ring the cars neck along back-roads and still see 50mpg. Thats certaily something people forget when they calculate running costs. Driving even modest petrols in such a way has always resulted in horrific mpg.
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