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Old 02-11-2021, 01:25 PM
Join Date: Jan 2021
Location: Texas
Posts: 8
Harbison is on a distinguished road
F25 or E83?

My youngest daughter is heading off to college in the fall. Her three older brothers all drive BMWs: 1 e36 convertible and 2 e90 sedans. She has her heart set on an x3. I'm looking specifically at the N52 engine cars because I have more experience with those. I consider myself to be a YouTube certified mechanic. LOL I do all my own repairs and maintenance so I look at cars a little differently than most.

So I guess I'm looking at 2007-2011. Any advice on E83 vs F25? I definitely want to stick with the naturally aspirated non-turbo engine. Other than styling are there other differences to consider?

Thanks for your input!
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Old 02-11-2021, 02:28 PM
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Join Date: Jun 2014
Location: SA, TX
Posts: 5,588
crystalworks is on a distinguished road
N52 offers a little more power and economy I believe vs the m54. N52 has foibles just as the m54 did. I'm dealing with one of them now on my wagon, 4 front head bolts sheared causing big oil leak. Which would lead to another n52 problem of oil soaking the spending belt leading to ingestion through the crank seal.

Both engines are fairly reliable if preventative servicing is done prior to being put into daily use. That's my experience at any rate.

Oh, just reread your post. You're only looking at e83's with the n52 (2007+). Then the differences would be limited to mostly technology and styling as you mentioned i would assume.
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
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Old 02-12-2021, 10:39 AM
Join Date: Jan 2021
Location: Texas
Posts: 8
Harbison is on a distinguished road
Thanks for your response. I'm planning on sticking with the N52. Nothing against the M54. It's just that M54 cars are 15 years old. Also looking at X5 e70 with the N52. For simplicity's sake, sticking to the naturally aspirated, non-turbo, inline 6 cylinder engine. Maintaining a fleet of BMW's certainly keeps me busy. Getting ready to replace a guibo on the '98. I believe maintenance is the key to longevity.
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