Buying Advice for E85 rust

Stretch_Blanco

Member
Scotland
Hello all, thank you in advance for any replies!
I am looking to purchase my first Z4, I would like to get a facelift E85 30Si. I have been searching for a while and keep coming back to the same one, the trouble is a couple of red flags in the cars MOT history. I wonder if anyone would be able to help clarify whether this is a major red flag or really quite a normal thing.

I'm going to try and attach some pictures to aid my explanation. So in the first picture is a screenshot of the 2017 MOT the car went through in which in the advisories you can see a few corrosion comments- the last one being all of the vehicles underside!!
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I will also copy and paste the advisories incase the image does not show:
Advisory notice item(s)
Nearside Rear Brake pipe slightly corroded flexi to caliper (3.6.B.2c)
Offside Rear Brake pipe slightly corroded flexi to caliper (3.6.B.2c)
Offside Front Brake pipe slightly corroded (3.6.B.2c)
vehicle underside all has surface corrosion including all suspension components
Not sure if the way I am trying to add these screenshots will work or not.

Then in 2018 it passed its MOT with minimal comments as to any corrosion.
Advisory notice item(s)
Bonnet retaining device slightly deteriorated safety catch (8.4.2)
Nearside Rear Nail in tyre ()
Offside Front Brake pipe slightly corroded (3.6.B.2c)

Then in 2019 it failed MOT and one of the failures was:
Repair immediately (major defects):
Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength floor (5.3.6 (a) (i)).
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The person selling the car now only bought the car in January this year, and says that they do not know that much about what was done to fix the 2019 MOT failure if anything. Only suggesting that it may have been a very particular MOT-er that picked up on all these things and made issues out of them. He has been very helpful though and has sent me the best images he can of the underside. However I find it hard to spot much, the shock absorbers are all covered in surface rust which does not bother me too much but the rear subframe does look a bit more rusty than just a bit of surface- again i will try to add a picture but not sure if it will show.
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I have owned Land Rovers before and seen a lot of the undersides of them so I am not too put off by seeing a bit of rust under a vehicle, and I am also capable of wire brushing and undercoating it.
In my experience Subframes have also been made out of pretty thich metal and can handle a bit of rust.

What I am wondering though is if this is an abnormal amount of rust, the vehicle has done 90,000 miles and is 2006. Or is this something that most Z4's of this age will have but you just wont know or hear about due to not all MOT inspectors being as rigid with their checks.

Apologies for the long post, I just wanted to include as much information as i could!
 
The photos don’t look too bad but rust is not a common problem so I’d want an AA check before considering the car.
 
paddy wright said:
The photos don’t look too bad but rust is not a common problem so I’d want an AA check before considering the car.

Do they AA take the car to a garage to get it up on a ramp and inspect? How much can they really tell you? Do you know?
 
Stretch_Blanco said:
paddy wright said:
The photos don’t look too bad but rust is not a common problem so I’d want an AA check before considering the car.

Do they AA take the car to a garage to get it up on a ramp and inspect? How much can they really tell you? Do you know?

Well if you have experience with Landrovers you could ask to be allowed to look underneath as well (suitably distanced of course). That should give you a fair idea.
 
enuff_zed said:
Stretch_Blanco said:
paddy wright said:
The photos don’t look too bad but rust is not a common problem so I’d want an AA check before considering the car.

Do they AA take the car to a garage to get it up on a ramp and inspect? How much can they really tell you? Do you know?

Well if you have experience with Landrovers you could ask to be allowed to look underneath as well (suitably distanced of course). That should give you a fair idea.

Yeah which would definitely have been the best way forward, unfortunately i'm in Scotland where cars for sale is exceptionally limited so pretty much everything I look at is miles away down in England.
 
Stretch_Blanco said:
enuff_zed said:
Stretch_Blanco said:
Do they AA take the car to a garage to get it up on a ramp and inspect? How much can they really tell you? Do you know?

Well if you have experience with Landrovers you could ask to be allowed to look underneath as well (suitably distanced of course). That should give you a fair idea.

Yeah which would definitely have been the best way forward, unfortunately i'm in Scotland where cars for sale is exceptionally limited so pretty much everything I look at is miles away down in England.

Ah yes, there is a problem. Oh well.
 
The rear subframe looks pretty bad dude, not end of the world it can be replaced, I would be more concerned about shock top rusting away or where the rear arms bolt to the chassis if that’s rotten it will be expensive. Just going over some jobs on my 03 and the places I just mentioned are near perfect also the subframe is solid. Z4’s are not known for body rot but the one you have shown looks really bad, maybe lived outside by the sea at some point in its life.
 
mr nurburgring said:
The rear subframe looks pretty bad dude, not end of the world it can be replaced, I would be more concerned about shock top rusting away or where the rear arms bolt to the chassis if that’s rotten it will be expensive. Just going over some jobs on my 03 and the places I just mentioned are near perfect also the subframe is solid. Z4’s are not known for body rot but the one you have shown looks really bad, maybe lived outside by the sea at some point in its life.

Yeah, I really dont want to buy a car and spend my first week with it welding the floor up! Yes, I did wonder as rust problems dont seem to be as bad on these as the E46's. I did some looking into it and it looks like the previous owner who had it for several years lived in Cornwall, so yeah by the ocean ...
 
Plenty of others about as well.
But I see you've already started pursuing a couple of forum ones :thumbsup:
 
enuff_zed said:
Plenty of others about as well.
But I see you've already started pursuing a couple of forum ones :thumbsup:

Yeah have seen a few lovely ones on the forum, the nice ones at fair prices do seem to get snapped up quickly!
 
Bingo. By the ocean.
I would look at others to be honest you want to enjoy your new car not having to do a major strip down.
If it was £1000 and chassis was solid you could do a total rebuild of the rear end and whatever else you find and make a nice car, depends if you want a project or not.
 
mr nurburgring said:
Bingo. By the ocean.
I would look at others to be honest you want to enjoy your new car not having to do a major strip down.
If it was £1000 and chassis was solid you could do a total rebuild of the rear end and whatever else you find and make a nice car, depends if you want a project or not.

I mean I do have quite a lot of spare time with this lockdown and access to a ramp but I hate buying a car that immediately needs a lot of work cause it kind of taints your first image of the car. I'll see how my other enquiries pan out but not had much luck so far.
 
Bar for a couple of threads about rust/rot on the rear quarters of coupes I can't recall a thread about rust (prepares to be corrected :lol). I think the body carried a twelve year guarantee from new so facelift E85/E86 are not that far out of cover even now.

The paint finish on the diff carrier and rear swing arms is pants - mine is an 07 and looks awful - to the point where I have a spare diff carrier in the garage and have looked at aftermarket adjustable swing arms (tube type) rather than the folded steel OEM ones. If its on its first shocks they will want changing anyway so I wouldn't be over worried if all that's wrong is what the photos show.

BUT now some words of caution ........ if its a Scottish car it might well have seen more salt on the roads and i would check the service history and MOT history (can't remember if it shows the garage or not) and if its been a seaside car I'd want to be all over the underneath before parting with my cash.

I live in Norfolk and bought my Zed in Devon - nothing like a road trip home. Happy hunting :thumbsup:
 
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