Adam120

Hi all

I really want to get a Porsche Cayenne.

I have around £30k to spend so would be looking at second hand models up to 5 years old.

I average about 5k miles a year which consists of a few short trips a week with one long trip (London-Midlands) once a month.

I can afford a diesel for this amount however from I'm sure you will all tell me that based on my driving style above, I'd be better suited to a petrol. Trouble is, a petrol cayenne is about 10k higher in price.

From what I understand, it's not so much the mileage that's the issue but the constant small trips i'd be doing and the affect it would have on the DPF.

Would it be foolish to get the diesel based on my driving style above even though I'd be doing the monthly motorway trip?

mikegally

Hi, I have a similar story to you.

Bought a Cayenne TD 2 years ago and year one I only did 3K miles, predominantly very short journeys. Towards the end on that year I began getting DPF errors and eventually Limp mode.
I researched DPF issues and actually managed to sort it myself. I now do about 8K per year so DPF takes care of itself.
But for you, one or two decent motorway journeys per month will be enough to keep everything healthy and ticking over so dont worry.

If you are concerned you can buy a cheap bluetooth diagnostic tool that plugs into you OBD port and communicates with your phone, you can then view live engine data whilst driving and monitor your DPF levels.
I have one and its magic, you can even see when a regen is taking place or do a forced regen. Mine has also been used to reset my service light, program new injectors, program a new battery and reset many codes etc Invaluable.

mike

Farmer Michael

With a budget of £30,000 you have a wide choice as far as I can see, a quick look at Autotrader shows over 50 Cayennes between £27,500 and £30,000 with something for everyone - V8 Turbo, V8 and V6 Turbo S, 4.8 GTSs, some V8 4.2 diesels and of course a lot of V6 3.0 diesels. Over 80% of 958s sold in the UK were diesel powered so diesel power probably gives you the widest choice of builds and options. It probably depends on how old or what mileage you are prepared to take on. Personally I wouldn't go for a Hybrid but others might say otherwise?

My budget was little more than half yours and in February 2021 I bought a highly optioned 2011 (2012 MY) diesel with a 107,000 miles on the clock. My car has Espresso and Cognac leather interior, sunroof, air suspension with PASM, steering Xenon headlights, towbar and 14 way seats.

Probably the thing to watch for on the 3.0 diesel is the leaking timing cover, with it being at the back of the engine it's a £5,000 specialist or £10,000 plus main dealer repair. Sadly mine does leak but it is liveable with. On the petrols and the V8 diesels the transfer case failure is probably the biggest potential issue.

As already suggested getting a good OBD reader allows you to do a lot yourself if that appeals to you. Other than the oil leak I haven't suffered any great issues. I did the 160,000 mile maintenance when I first got my Cayenne and have since done another engine oil and filter change. I have also fitted a new battery and sorted the odd minor issue. My shortest round trip would be 15 miles so experienced no DPF problems. Personally I haven't got on with 21 inch wheels with a pothole on the M11 slip road putting a bulge in the sidewall of one tyre, I have put on a set of 19s for summer and I have a set of 18s for winter. I previously had a 2003 Cayenne S (4.5 V8) and whilst the 3.0 diesel doesn't have quite the get up and go at high speed, up to 60 mph off the line there is little difference, it is much more refined and both more nimble and comfortable than the 955; after over a year and 13,000 miles I relish every trip in my "new" Cayenne!

Chaos

Macan?

993C4NY

Which diagnostic and App do you use for this? Does it show engine oil and transmission oil temps?

Adam120

Thanks Mike that is very helpful. I read your other thread too about the DPF filter and how you managed to diagnose your issues with this tool, very useful info!

I'm going to do some more digging into this as like you say, being able to monitor the DPF levels would be amazing

Cold-Gas

You can easily delete the SCR & DPF and then no more worries about those pesky things.

Adam120

Thanks for your response. What is your average driving style like? Do you do much short trips? I'm guessing if you do 13k miles a year then that prob sounds like you do cover quite a few longer trips.

Farmer Michael

I don't take the Cayenne unless I am going drive at least 10 miles each way. Essex to Oxford and back in a day is more typical of the journeys I use the Cayenne for. My driving style would best described as rapid but not reckless - full throttle acceleration where appropriate, 30 and 40 limits treated as sacrosanct, the national limit as a guide, but careful enough to not collect points. Shorter journeys usually done in the Hilux, Jimny or Seat Mii.

mikegally

The Autel AP200.
It comes with one manufacturer free (free updates for life) and others can be added for $20.
Once its set up (download 2 x software from app store) and plugged in you go to - diagnostic - porsche (finds your VIN) - control unit - DME - Live data......hey presto, all the info you need.

Looks like theres a 20% discount on amazon in the US at the moment.

Adam120

Ahh yes! So this is something i'd also considered, using the diesel for long drives only and keep a petrol/electric for local trips. I think it makes total sense. At least then you are only driving the car for the type of trips they're intended for.

Your driving style seems very similar to me. I also now religiously respect the speed limits since being caught out on the A40 with the average speed checker and sitting through a painful speed awareness course, the next time that happens would be definite points so been good ever since.

For £35k like you say above, I'd have a wide range of cayenne's to choose from leaving enough for a smaller petrol car. This would of course mean 2 lots of maintenance vs just the one car but could be more efficient in the long run, plus i'd definitely get much better MPG (even the V8 mpg looks good on paper).

mafpolo

How do you do a "forced regen"?

mikegally

You can do a forced DPF regen via the AP200.
Never done it myself but its there if you need it.
I always managed to do an active/passive regen whilst driving on the motorway.

Adam120

This does sound really good to have the option, but am I right in thinking that this shouldn't be done often or relied on?

mikegally

Yes, you would only really need to do a forced regen if the car goes into limp mode meaning you'd struggle to hit the speed/revs required.