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#4447425 - 07/02/17 12:54 PM Reliability of modern Turbo engines
jrcowboys Offline


Registered: 11/16/05
Posts: 54
Loc: Round Rock Texas
Guys;

Now that everything seems to be going turbo, how do you think reliability of such engines is impacted? I'm not talking about the turbo itself. The effective compression is increased, possibly causing more wear, etc. Also, with direct injection there is the buildup on intake valves.

Thoughts? Note: I'm looking at a 2012 BMW 335 with approx 85K mileage. I know there were earlier issues with the high pressure fuel pump.

JR

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#4447444 - 07/02/17 01:15 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
sleddriver Offline


Registered: 02/06/10
Posts: 4603
Loc: Central Texas
Now?

I bought a new 83 SAAB 900 turbo. Drove it for 14yrs and 254,000mi. Original non-water-cooled turbo lasted untill 205,000mi. No problems with the motor. Never consumed oil.

The sled motor is turbocharged, has accrued about 220,000 mi over my 19 yrs of ownership. No problems with motor or turbo to date.

Swedish Steel has a long history of turbocharged motors. So do I.

Given this, a 2012 BMW is a completely different animal from either car above. I'mm willing to bet a lot (most?) of it's cooling system is now plastic rather than metal. And here in our area we only have two seasons: SUMMER and February.

Is this your first BMW?
_________________________
1998 Volvo V70 T5 226,808 mi. Original Owner.
M1 10W-30 HM
"It's never a mistake to buy tools, defined broadly. They're not a cost, they're an investment." - J.B. Peterson

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#4447450 - 07/02/17 01:24 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
dareo Offline


Registered: 10/17/07
Posts: 1448
Loc: utah
With modern BMW i would expect and plan for the very worst. Big Money Wasted. If you are cool with that then spend away.

Plenty of them are perfectly reliable. Many have had huge repair bills from turbos, common rail injectors, HPFPs, you name it.

To really enjoy a newer BMW i would suggest leasing them. It may cost slightly more per month but you can just drop it off or have the dealer tow it when it breaks and take a loaner.
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2016 Golf Wagon 5MT, 2014 Accord Sport 6MT, 2005 GMC 2500 SLT 6.0 2WD, T100 Sold

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#4447452 - 07/02/17 01:33 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
CT8 Offline


Registered: 10/09/14
Posts: 10979
Loc: Idaho
Originally Posted By: jrcowboys
Guys;

Now that everything seems to be going turbo, how do you think reliability of such engines is impacted? I'm not talking about the turbo itself. The effective compression is increased, possibly causing more wear, etc. Also, with direct injection there is the buildup on intake valves.

Thoughts? Note: I'm looking at a 2012 BMW 335 with approx 85K mileage. I know there were earlier issues with the high pressure fuel pump.

JR
Probably as reliable as the quality of manufacture goes. engine failure is quite severe on boosted engines as compared to N/A engines. The price is worth it. Maintenance is important an in any engine.
_________________________
"Don't let your preconceived notions get in the way of facts."
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#4447458 - 07/02/17 01:42 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
JHZR2 Offline



Registered: 12/14/02
Posts: 41786
Loc: New Jersey
Overall no concern at all. But bmw was an early adopter and so you need to know what you're getting into with bmws. If that's an n54 you may have an hpfp concern as well as deposits. Or not.

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#4447462 - 07/02/17 01:44 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
madRiver Offline


Registered: 07/11/15
Posts: 3538
Loc: New England
No idea on BMW. My good friends 2008ish BMW 535ix manual wagon with twin turbos had both fail around 160k in 2015.

My wife drives a 2005 Legacy turbo wagon and still running original turbo with 218k since brand new.

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#4447466 - 07/02/17 01:48 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
UncleDave Offline


Registered: 06/02/14
Posts: 1637
Loc: Ca.
I'm concerned about the tiny composite alloy auto gas and diesel turbos, the bigger diesel turbos dont bother me so much.

The older heavier slower responding stainless/inconell units were stouter.

One of my Benz's the 2013 had a turbo " come apart" a month ago as described by MB service at a mere 36K miles.

Had it not been under warranty Id have had a 7K bill.

Uncle Dave
_________________________
Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C

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#4447471 - 07/02/17 01:59 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
gregk24 Offline


Registered: 04/13/13
Posts: 5602
Loc: FL, USA
I am interested in this topic as well. My fiancée originally had a 2013 Jetta with the 2.5 that had been in VW's line up for years and years, but that car was totaled less than a year after purchase. They went with another Jetta, which at the time was model year 2014 and the first year for the 1.8 TSI. So far its been solid, time will tell I suppose.
_________________________
2012 Honda Accord EX-L K24z3
53,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
37,xxx miles
Castrol Edge 0w40 / OEM filter

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#4447491 - 07/02/17 02:30 PM Re: Reliability of modern Turbo engines [Re: gregk24]
dareo Offline


Registered: 10/17/07
Posts: 1448
Loc: utah
Originally Posted By: gregk24
I am interested in this topic as well. My fiancée originally had a 2013 Jetta with the 2.5 that had been in VW's line up for years and years, but that car was totaled less than a year after purchase. They went with another Jetta, which at the time was model year 2014 and the first year for the 1.8 TSI. So far its been solid, time will tell I suppose.


Well, if you ask me, the 1.8TSI and BMW's turbo offerings are totally different. VW's mill is designed for mass production, high MPG, and reliability before ultimate power. BMW is all about the performance first. Hopefully the 1.8TSI will live a long trouble free life. It is a lowish compression short stroke turbo engine that on paper looks great.
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2016 Golf Wagon 5MT, 2014 Accord Sport 6MT, 2005 GMC 2500 SLT 6.0 2WD, T100 Sold

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#4447515 - 07/02/17 03:04 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
fdcg27 Offline


Registered: 09/25/09
Posts: 15699
Loc: OH
Ford has been putting DI turbo engines ranging from 1 to 3.5 liters in perfectly ordinary cars, trucks, CUVs/SUVs as well as performance models for some years now. Some of these engines are in the same league as this BMW for specific output.
I'm not aware of any unusual failures in any of these engines, most of which are Mazda designs.
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12 Accord LX 86K PP 5W-20
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96 Accord LX 104K T5 10W-30
95 318i

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#4447524 - 07/02/17 03:25 PM Re: Reliability of modern Turbo engines [Re: fdcg27]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: fdcg27
Ford has been putting DI turbo engines ...for some years now. Some of these engines are in the same league as this BMW for specific output.


Yes, but Ford's testing & reliability is proven.

The EcoBoost F150 seemed to be a joke at first.... but we were all proven wrong with that.

I wouldn't trust a turbo BMW any further than I could throw it - compared to the reliability of the EcoBoost offerings from Ford.
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#4447529 - 07/02/17 03:28 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
Astro14 Offline


Registered: 10/10/10
Posts: 8536
Loc: Virginia Beach
Well, my wife's 2002 Volvo turbo only has 225,000 miles on it with zero engine work. My 2002 Volvo turbo only has 190,000 miles on it, on the original engine and turbo, with zero engine work.

So, a few more years, or another hundred thousand miles, and I will be able to tell if a modern turbo engine is reliable enough...
_________________________
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#4447548 - 07/02/17 03:47 PM Re: Reliability of modern Turbo engines [Re: jrcowboys]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
Originally Posted By: jrcowboys
Guys;

Now that everything seems to be going turbo, how do you think reliability of such engines is impacted? I'm not talking about the turbo itself. The effective compression is increased, possibly causing more wear, etc. Also, with direct injection there is the buildup on intake valves.

Thoughts? Note: I'm looking at a 2012 BMW 335 with approx 85K mileage. I know there were earlier issues with the high pressure fuel pump.

JR


If the high pressure fuel delivery system fails it will be costly if you have the DI system as well. That's why I chose the 2.5 NA PFI system in my 2017 Fusion.


Edited by tig1 (07/02/17 03:50 PM)
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4447549 - 07/02/17 03:49 PM Re: Reliability of modern Turbo engines [Re: Astro14]
tig1 Offline


Registered: 01/03/09
Posts: 13661
Loc: Illinois
Originally Posted By: Astro14
Well, my wife's 2002 Volvo turbo only has 225,000 miles on it with zero engine work. My 2002 Volvo turbo only has 190,000 miles on it, on the original engine and turbo, with zero engine work.

So, a few more years, or another hundred thousand miles, and I will be able to tell if a modern turbo engine is reliable enough...


But it most likely doesn't have DI. That's where the money is at.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4447553 - 07/02/17 03:54 PM Re: Reliability of modern Turbo engines [Re: tig1]
Astro14 Offline


Registered: 10/10/10
Posts: 8536
Loc: Virginia Beach
No, no DI on the 2002 Volvos, so I suppose they don't meet the "modern" definition...
_________________________
32 Packard 15W40
02 Volvo V70 T5 0W40 M1
02 Volvo V70 XC 0W40 Edge
05 MB S600 0W40 M1
16 Tundra 1794 5W30 Valvoline

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