Porsche Cayenne 4.2 V8 Diesel
Discussion
So after the debacle that was my mythical Audi SQ5 I decided to change tack and when a member on the Cayenne FB page intimated he'd be putting his 4.2 up for sale shortly I jumped at it.

This is the car in one of the seller's photos, wearing his wife's private plate here that didn't come with it, it's actually a 13 plate.... sadly the rims were included in the sale, they'll be replaced shortly.
It's a nicely optioned car, owned by a Welsh comedian originally and with only 60k on the clock and a major service just carried out I'm hoping that this will be less hassle as an ownership proposition than the Range Rover Sport I ran previously.

This is the car in one of the seller's photos, wearing his wife's private plate here that didn't come with it, it's actually a 13 plate.... sadly the rims were included in the sale, they'll be replaced shortly.
It's a nicely optioned car, owned by a Welsh comedian originally and with only 60k on the clock and a major service just carried out I'm hoping that this will be less hassle as an ownership proposition than the Range Rover Sport I ran previously.
Yep, remapping yields 420+BHP & 1000Nm Torque, yet you should still find you'll be getting 35-40mpg without too much restraint. I reckon it's the best built & engineered vehicle I've owned, that 4.2 lump is superb & even manages to sound like a smooth petrol V8 rather than the expected bag of spanners.
So far, over eight months ownership, I found the only thing to keep an eye on was the battery charge level, as -if it was allowed to run a bit low after not being used for a while- it could cause the Bose amp to cut out from starting, leaving only the muffled low frequencies of the subwoofer and also the rear n/s door lock actuator would refuse to 'actuate' (that sounds very specific, but for some reason it generally seems to be this particular door that is affected).
There are quite a few related tales on the Cayenne forums with various theories & fixes, but in my case, the simple expedient of connecting a trickle-charger if it was going to be stood idle for any length of time and all the issues were resolved.
Other than that, it's been pretty much faultless.
So far, over eight months ownership, I found the only thing to keep an eye on was the battery charge level, as -if it was allowed to run a bit low after not being used for a while- it could cause the Bose amp to cut out from starting, leaving only the muffled low frequencies of the subwoofer and also the rear n/s door lock actuator would refuse to 'actuate' (that sounds very specific, but for some reason it generally seems to be this particular door that is affected).
There are quite a few related tales on the Cayenne forums with various theories & fixes, but in my case, the simple expedient of connecting a trickle-charger if it was going to be stood idle for any length of time and all the issues were resolved.
Other than that, it's been pretty much faultless.
alan-87 said:
Is economy really that good on these?
Currently running a 2010 Range Rover Sport and it averages 28mpg pretty much everywhere.
Light years of difference Alan.Currently running a 2010 Range Rover Sport and it averages 28mpg pretty much everywhere.
My previous was a 2010 3.0 TDV6 Range Sport too.
Had it for 17k Miles and averaged 26mpg
Done just short of 1k in the Cayenne so far and averaged 36. In a different league quality and smoothness of drive too. It's a very special place to be.
alan-87 said:
Is economy really that good on these?
Currently running a 2010 Range Rover Sport and it averages 28mpg pretty much everywhere.
Currently running a 2010 Range Rover Sport and it averages 28mpg pretty much everywhere.

eta & because it’s so fuel efficient (without requiring bloody adblue), it’s only £350 for annual tax- which, when one considers the performance, is remarkable.
Edited by maddog993 on Saturday 30th April 20:29
alan-87 said:
Wow, may have to start having a look on Auto trader.
Bloody rangey costs a fortune and is always broken... Bit of man maths may see an upgrade!
That's why I changed, I'd fixed all the £1,000 repair items, all that was left was the £3k repairs and that didn't sound like my idea of a good time so I sold it whilst it was working perfectly!!Bloody rangey costs a fortune and is always broken... Bit of man maths may see an upgrade!
Transfer cases really are the only known weakness of these 4.2 Cayennes but the part has been redesigned now, many have already been replaced under warranty and Porsche are agreeing to free replacement in most cases even with no warranty so it's not a huge issue. (Plus it's only a £2.5k fix anyway which is far less than my annual RRS spend lol)
alan-87 said:
Your RRS history sounds very similar! ?? What kind of ball park is the buy in for one of these?
I opted for a non ad-blue car which means a 958-1 model (2013) with low mileage and good history though not heavily optioned. I paid £23.5 which is probably a little under market to be honest but there are a few good cars out there if you're patient.A good day in Cayenne land today.
There are a couple of small mods that I like to make to all my cars and today it was the turn of the Porsche
I like to install an ignition switched feed for my dashcam as well as a couple of permanent live feeds for my sat nav and phone charger.
This car is probably the easiest one that I have ever performed these tasks on, thanks to there being a fuse box with spare slots located in the end of the dashboard on the driver's side.
A couple of add-a-fuse taps and some careful trim removal and refitment later and the job was done.
Total cost £10.50 plus a couple of bits that I already had in the garage.
There are a couple of small mods that I like to make to all my cars and today it was the turn of the Porsche
I like to install an ignition switched feed for my dashcam as well as a couple of permanent live feeds for my sat nav and phone charger.
This car is probably the easiest one that I have ever performed these tasks on, thanks to there being a fuse box with spare slots located in the end of the dashboard on the driver's side.
A couple of add-a-fuse taps and some careful trim removal and refitment later and the job was done.
Total cost £10.50 plus a couple of bits that I already had in the garage.
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