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BMW 3 series E91 estate 320d - advice on what to look for /common faults? - cws

As above, looking at the E91 estate, probably around 90-100K mileage and 2006/2007 models. However, I know next to nothing about BMW diesels (coming from a VAG TDI background)! I've read briefly about with the issues of swirl flap failure and VANOS seal faliure on some BMW diesels - would the 2.0L diesel on this model suffer the same issues?

Any other issues to watch out/be aware of?

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - gordonbennet

Yes they are susceptable to swirl flap failure, rare as it is...roughly £200 will see the flaps removed and correct blanking plugs fitted instead at PMW Chelmsford, other indies will be able to offer this service too, we have had 2 x 320d's altered by them, they willsell you the blanking plates for self fit if you feel up to it....whilst there the EGR valve requires periodic cleaning out.

Other underbonnet issue is the relatively short turbo life, most seem to go around the 45k mark, so hopefully already been replaced....i blame ridiculous oil change intervals, and the modern motorists lack of due care in use, ie warm and cool down periods,...yes i know its a Luddite view and no longer fashionable, but those who want to abuse their vehicles please carry on and enjoy doing so, i shall continue to maintain and treat mine with due diligence, we'll see whos lasts.

Front suspension bushes will be coming up to their time, probably getting spongy, eventually the suspension starts knocking, easy to check...grasp front wheel and try to roll the car forwards and backwards by the wheel....if the wheel shows fore and aft movement then the bushes are worn, possibly needing kit including wishbone, not a bank breaker, get a good indy to do it.

If its auto make sure its had an oil change, i don't know what mileage is recommened and i dont know if BMW indeed do recommend, around this time both BMW and MB and others decided auto transmissions were sealed for life, unfortunately that life turned out to be rather short and the policy has been quietly dropped.

These are things i know of, no doubt others will add to this, presumably you've had a poke nose at HJ's reviews above ^^, and had a read up on BMWland forum.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - unthrottled

yes i know its a Luddite view and no longer fashionable

I think people are put off by the cost of modern motor oils. I completely agree that, for most users, 20,000 mile intervals are too long.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - gordonbennet

I think people are put off by the cost of modern motor oils. I completely agree that, for most users, 20,000 mile intervals are too long.

Maybe we're put off by the rather more eye watering costs of not servicing well, i learned in a previous life from my old boss who overmaintained his fleet of British only lorries, mainly Cummins but some Rolls engines, he always said oil is cheap, engines gearboxes axles and downtime are not...highly specced they ran virtually trouble free for around 7 years and there was a queue of small hauliers and owner drivers to buy them.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - coopshere
Absolutely right GB. Matters not whether it is a small car or a huge commercial vehicle, the secret of longevity is correct and regular servicing. Why would you moan at £20 to £30 a year for quality engine oil for a modern car when a new engine would cost £5000 or more. If you can't afford to have it serviced properly then you can't afford to run it.
BMW 3 series E91 estate 320d - advice on what to look for /common faults? - cws

Am I correct in thinking the early E91 320d's will have had the M47 2.0L diesel engine and the later E91 cars have the (better?) N47 2.0L diesel?

The M47 engine appears to have many more issues?

And why such a sort turbo life? VAG TDI's also have similar (?) turbos and have 20K oil change intervals yet turbo's don't normally start being problematic until 100K.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - Peter.N.

I would heartily agree, I think many of the turbo failures in modern engines are down to the ridculously long oil change intervals, I have run turbo diesels for about 25 years and probably over half a million miles and I have never had a turbo fail, I have been changing my oil at 5000 miles but the modern engines do burn a lot cleaner and would probably manage 6-10k miles but certainly not 20k.

Oil is not all that expensive if you shop around, any oil that meetes the spec will do if its changed regularly, I pay about £13.00 for oil for the 406 Hdi but that doesn't have a DPF but even the correct oil for that is only around £20.00 if you shop around. As gordenbennet says' oil is cheaper than engines.

Somewhere on the net is a picture of the inside modern engine with turbo failure and its covered in small granuals of carbon.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - cws

Making a fix to block the swirl flaps on a car that is going to cost in excess of 6K doesn't appeal to me (nor fill me with confidence!).....

I think I'll just wait until prices on the E91 with the N47 engine come down a bit more.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - slkfanboy

>they are susceptable to swirl flap failure, rare as it is

This was pre 2005 models only.

>whilst there the EGR valve requires periodic cleaning out.

>relatively short turbo life

Again a pre 2005 issue with blocked breathers.

>Front suspension bushes

> I did 157k in my 2007 320D

if it been serviced correctly (vital) i had no such issues

>both BMW and MB and others decided auto transmissions were sealed for life, >unfortunately that life turned out to be rather short and the policy has been quietly >dropped.

Completely not true, There are no gear box issues for BMW or Merc. I post often on the BMWLand & SLK forums and not seen many issues and the advise of the forums is not change the oil in a BMW auto. Ppl have killed auto boxes ignoring this advise, the boxes have magnets to capture metal and need hot flashing, else metal can get dislodged.

2005> car are solid and no real issues as I said my 2007 did 150K and was properly serviced which is Vital. Turbo usual fail big time in any car because of oil issues blockages or incorrect servicing. Some ppl like to change the oil more often then the service interval and that is a good idea.

Only failure in the 3.5 years of ownership was th side light bulbs at £8 each.

Service cost was your in for £250 a go at the dealer and around £180 at an indy.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - Collos25

Look on the various BMW web forums ,google "vanos" BMW diesels are not particulary economical nor very good as far as reliability goes - the reason most are for sale is they are about to cost massive amounts in parts the suspension alone has more parts on one wheel than a Ford has all told.If you want reliability from a BMW then buy a late model petrol no butterfly problems little or no vanos problems and will run for many thousands of miles problem free. If you want an a classy economical diesel than buy a MB 220 e class the choice of German taxi drivers not so sofiscated but will run for years.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - madf

Just read the Parkers Owners Reviews.

And then be canny and buy something less expensive to run if it has been abused/neglected/pennies pinched.

People sell BMWs for lots of reasons - usually lots of £ss due to be spent.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - slkfanboy

>Look on the various BMW web forums ,google "vanos"

as we said before 2005 only

> BMW diesels are not particulary economical

See what car true mpg and you see a MB C220 does 49.6 mpg and BMW 320D does 48.9 ( 50.1) so you talking £40 a year saving on a 20,000 mile per years basis.

nor very good as far as reliability goes -

the reason most are for sale is they are about to cost massive amounts in parts the suspension alone has more parts on one wheel than a Ford has all told.

> BMW and Merc are Premium car and therefore have decent suspension system which don't go wrong that often

If you want reliability from a BMW then buy a late model petrol no butterfly problems little or no vanos problems and will run for many thousands of miles problem free. If you want an a classy economical diesel than buy a

>MB 220 e class the choice of German taxi drivers not so sofiscated but will run for

While you clearly don't like BMW and never owned one, unlike myself BMW 320D and Merc SLK and dad a MB E220 (had it fair share of issues). Service costs for both Merc £350 each a year and the BMW was £280 variable service.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - Collos25

I actually own a 520 petrol 2001(my third BMW) circa and my son has 2011 335 alpina I also have a new 220 cdi and I know one which gives the best of everything I also am using a 407 sw 1.6hdi for work .So without knowing me do not make presumptions you seem not know the problems that BMW diesels give when they get older Vanos and butterflys are still problematic as is the suspension the ADAC who register every call out put BMW well down the list of reliable cars you can look at all the taxi ranks in europe and you will struggle to see a BMW but you will see thousands of 220s and for a very good reason.

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - madf

nor very good as far as reliability goes -

the reason most are for sale is they are about to cost massive amounts in parts the suspension alone has more parts on one wheel than a Ford has all told.

> BMW and Merc are Premium car and therefore have decent suspension system which don't go wrong that often

There's an obvious contradiction in the above statements. Anyone who reads BMW forums and Owners' Reviews will be aware that neglected BMW suspensions cost a fortuune to repair... And in many cases require specialist tools .

I repeat my advice: don't buy a BMW which has been abused .neglected/ is due a major service..

BMW 3 series E91 estate 320d - advice on what to look for /common faults? - slkfanboy

>I repeat my advice: don't buy a BMW which has been abused .neglected/ is due a major service..

100% agree ,but would agree that for any car.

I see all the posted falts relate to e46 cars (pre 2005) and not a e91 i.e. 2005>. I see no issue purchasing an e91 2005 onwards thats correctly serviced.

Alex