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      04-22-2016, 08:14 PM   #1
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N47 Robustness and Mileage?

How robust is the N47? As in how many miles could it take with proper servicing? 150K, 200K? (I'm aware of the chain issue)

Any previous high mileage experience?
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      04-22-2016, 11:03 PM   #2
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Quote:
Originally Posted by E90-AMD View Post
How robust is the N47? As in how many miles could it take with proper servicing? 150K, 200K? (I'm aware of the chain issue)

Any previous high mileage experience?
A friend of mine has a 123d with 190k miles on the clock and he has had no problems whatsoever. I've heard they can suffer with timing chain issues but provided they are serviced regular i think they are fine.
As always on the Internet you only hear the bad stories, bit like self diagnosis on the Internet you'll always end up thinking you've got cancer or something lol
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      04-23-2016, 08:52 AM   #3
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150k? I hope more than that as mines on 156k miles at the moment. Crank and chain was replaced at 108k miles and dpf at 145k.

Runs as sweet as a nut!
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      04-23-2016, 09:31 AM   #4
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Quote:
Originally Posted by mattp1986 View Post
A friend of mine has a 123d with 190k miles on the clock and he has had no problems whatsoever. I've heard they can suffer with timing chain issues but provided they are serviced regular i think they are fine.
As always on the Internet you only hear the bad stories, bit like self diagnosis on the Internet you'll always end up thinking you've got cancer or something lol
Wasn't expecting numbers like that! I hear low numbers from the word of mouth. At such mileage, can you still "Explore the engine's potential power" or do you have to be gentle with it? I know that your 335 is high too, so are they any different?
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      04-23-2016, 09:34 AM   #5
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Quote:
Originally Posted by bishbosh View Post
150k? I hope more than that as mines on 156k miles at the moment. Crank and chain was replaced at 108k miles and dpf at 145k.

Runs as sweet as a nut!
Was the chain and crank job or ? As in was it worth keeping the car?
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      04-23-2016, 10:16 AM   #6
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Modern engines quite simply last. With proper servicing theres no reason to imagine it wont do 250-300k. Ofcourse you might have to replace various parts such as injectors or turbo etc, but the core engine itself is generally pretty robust.

The issue is that what tends to happen, is once the car gets well over 150k, folk think its knackered, dont service it properly, and run it on a shoe string becuase they think its nearly dead anyway. Thus many cars that are approaching 200k ARE knackered, but not because of any inherent issues, simply because they've been owned by idiots who havent looked after them.
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      04-23-2016, 11:45 AM   #7
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Friends old 320d had 190k miles on it when it was written off by an uninsured driver, it drove fine but did feel a little loose compared to mine with half that milage.
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      04-23-2016, 04:45 PM   #8
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Quote:
Originally Posted by E90-AMD View Post
Wasn't expecting numbers like that! I hear low numbers from the word of mouth. At such mileage, can you still "Explore the engine's potential power" or do you have to be gentle with it? I know that your 335 is high too, so are they any different?
Well I haven't been gentle with the 335 yet lol. It pulls like a train and shows no sign of slowing down. Its remapped to 395 bhp and 595 lbs ft. Think they are pretty bulletproof to be honest. As I've said before its the things around them that tend to go wrong at higher mileages, Turbo's, EGR Coolers etc. If you can find one that's had all that work done there's no reason they wont get to 250-300k miles quite comfortably. My friend doesn't exactly baby his 123d around either its driven hard mostly and he's never had a problem. Its a great car not quite as brutal as the 335 but it will keep a lot of the modern "hot hatches" quite honest I think lol

Last edited by mattp1986; 04-24-2016 at 07:32 AM.
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      04-24-2016, 03:34 PM   #9
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Quote:
Originally Posted by E90-AMD View Post
Was the chain and crank job or ? As in was it worth keeping the car?
t was done under warranty. Been running a bluefin map for years. Got it dyno'd earlier this year, putting out 209bhp and 351 lb/ft of torque
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      04-25-2016, 02:17 AM   #10
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I brought a used 120d earlier this year with 110k miles on it. It had no issues at all. We needed something bigger so parted with it at 120k miles. My point is the car drove and felt like new. Always buy based on condition and not just mileage. There are a few taxi drivers on the PH forums with their N47's well above 250k miles and none have required major work. I think the key is oil changes. Forget the CBS, an engine with a timing chain needs good clean oil twice in that interval. Besides the sprocket issues was addressed from the models 2011 onward IIRC.
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      04-26-2016, 03:36 PM   #11
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Thanks for the replies. Auto 318d is a really good engine. It never fails to surprise me with the power even though it's the underpowered 2.0. Just wish the 320 didn't cost 5000 to insure (it's not a typo!)
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      06-19-2016, 02:42 PM   #12
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I've hit 64,000 miles and had a full service done.

Do I need to change any belts or pulleys, etc...?

Advice much appreciated
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      06-20-2016, 04:25 AM   #13
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Nothing I can think of, I go on what the CBS says, apart from oil changes where I always change the oil more often than the 'recommended' interval.

Enjoy the car

Last Friday my water temp sensor failed and put the car into limp home mode. Engine kept saying it was overheating. It was recovered to a garage and fixed later that day. Mechanic said the engine sounded fine and it's now done 158,000 miles.
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      06-20-2016, 09:59 AM   #14
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Quote:
Originally Posted by bishbosh View Post
Nothing I can think of, I go on what the CBS says, apart from oil changes where I always change the oil more often than the 'recommended' interval.

Enjoy the car

Last Friday my water temp sensor failed and put the car into limp home mode. Engine kept saying it was overheating. It was recovered to a garage and fixed later that day. Mechanic said the engine sounded fine and it's now done 158,000 miles.
Thanks for the advice & oh believe I'm enjoying it!
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      06-20-2016, 07:16 PM   #15
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Originally Posted by Aragorn30d View Post
Modern engines quite simply last. With proper servicing theres no reason to imagine it wont do 250-300k. Ofcourse you might have to replace various parts such as injectors or turbo etc, but the core engine itself is generally pretty robust.

The issue is that what tends to happen, is once the car gets well over 150k, folk think its knackered, dont service it properly, and run it on a shoe string becuase they think its nearly dead anyway. Thus many cars that are approaching 200k ARE knackered, but not because of any inherent issues, simply because they've been owned by idiots who havent looked after them.
This.
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      06-20-2016, 07:48 PM   #16
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Quote:
Originally Posted by Russbmw View Post
This.
Cheers pal, the car hasn't had any belts changed ever so I was wondering if any are due now at such mileage.

BMW diesels are incredibly good and I'm very satisfied with this car
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