Running costs - Page 2 - Boxster/Cayman - PistonHeads UK

Dont shoot me down for asking. Thinking about getting the Cayman GTS 4.0. It will be an everyday car so I need the MPG to be sensible. Currently in a F82 M4 that returns my kind of sensible of 28 mpg. What does the manual GTS return and indeed the GTS with PDK. Thanks

25.9 claimed for manual / 28.0 claimed for PDK: https://www.porsche.com/uk/models/?compare=982161 Can get over 30 on my 2.5F4T, but people don't like them lol

Fnumber1user said: 25.9 claimed for manual / 28.0 claimed for PDK: https://www.porsche.com/uk/models/?compare=982161 Can get over 30 on my 2.5F4T, but people don't like them lol Thanks, the claimed figures I could live with. The actuals would be great if they delivered like your 2.5FT.

Depends on how you drive it...over 30mpg is very achievable in the 4.0 if you're just doing motorway miles and use the 3cyl mode. Can't imagine it'll be any worse than an M4. I once achieved >40mpg in my 4 pot GTS which I was quite impressed with.

I get about 21/22 mpg. That is all A and B road driving though in sport mode, no motorway.

I watched this JayEmm video and he quotes achieving 37mpg on the motorway.

ATM said: I watched this JayEmm video and he quotes achieving 37mpg on the motorway. And thats with about 50kg excess weight as well.

130R said: I get about 21/22 mpg. That is all A and B road driving though in sport mode, no motorway. Similar to what I get in my GT4. Only cruise control on motorways give a higher mpg in my experience.

Thank you for the replies. Quoted MPGs look palatable given the car will be used as a daily. I have a 16 mile commute all on A roads with no stop starts so optimistic it will deliver more than my M4. I know the outlay is big, but at least the car will work as a daily and shouldn’t plummet in value like the M4.

I certainly would not expect it to be any better than the BMW. I very rarely average over 20MPG in my 718 Spyder over a tankful. More like high teens. I did the Ring and back last summer and got 20MPG not including the track work. I would be astonished if you could get anywhere near 30MPG over a tankful, you would have to drive like a nun, which is not the point of these cars is it? At least it’s not a 981 GT4, they are truly dreadful for economy in my experience.

bigmowley said: At least it’s not a 981 GT4, they are truly dreadful for economy in my experience. On the motorway I have got over 30mpg in mine. It’s lower when I go for a fun drive. But I don’t think they are that bad. Granted I don’t use it daily.

keo said: bigmowley said: At least it’s not a 981 GT4, they are truly dreadful for economy in my experience. On the motorway I have got over 30mpg in mine. It’s lower when I go for a fun drive. But I don’t think they are that bad. Granted I don’t use it daily. I’ve got some pictures of the dash display somewhere but I ran mine in by driving to Bordeaux and back to buy some wine. Back in the day when this was possible I think it averaged 23MPG for the entire trip despite being gently driven. That was by far the best I ever got from it.

Ah found the pictures, there you go utterly w k! Note the fuel light on. Permanent state for that car

I see what you mean! Yep that’s not great. Maybe with it being new the engine was a bit tight? Mine has done nearly 10k now and I had it at 9k.

keo said: bigmowley said: At least it’s not a 981 GT4, they are truly dreadful for economy in my experience. On the motorway I have got over 30mpg in mine. It’s lower when I go for a fun drive. But I don’t think they are that bad. Granted I don’t use it daily. This is helpful. I won’t drive it like a nun, but not always up for a a spirited drive to work early in the morning when you are set for a long hard day. If I can get around 25mpg on journeys like this, I would be more than happy.

My 981 GT4 gives me low 20's ... it has not improved with tuning ... so 23 is to be expected and maybe 28 being very careful on the motorway ?

Not a GT4 but I had a Boxster S (987 3.2 engine). Technology has moved on a lot since then no doubt. I used to average approx 23mpg on my 70 mile round trip commute (75% motorway). The problem I had was that I found it nigh on impossible to drive without ringing the revs out, the noise was so addictive! A GT4 obviously a lot more power. Guess it come down to how restrained you can be (imagine a GT4 will be even more addictive to rev out)!

RTA3 said: This is helpful. I won’t drive it like a nun, but not always up for a a spirited drive to work early in the morning when you are set for a long hard day. If I can get around 25mpg on journeys like this, I would be more than happy. I'm interested in your thought process. Why do you want something like this for a daily when you won't be using it to full potential? Why not have something basic for regular commuting and the GTS for fun and the occasional commute when you feel like it? Obviously not saying anything's wrong with your choice but just keen to understand why if MPG is a concern.

Lonely said: RTA3 said: This is helpful. I won’t drive it like a nun, but not always up for a a spirited drive to work early in the morning when you are set for a long hard day. If I can get around 25mpg on journeys like this, I would be more than happy. I'm interested in your thought process. Why do you want something like this for a daily when you won't be using it to full potential? Why not have something basic for regular commuting and the GTS for fun and the occasional commute when you feel like it? Obviously not saying anything's wrong with your choice but just keen to understand why if MPG is a concern. I had always thought I would get into a porsche at the point of retirement. However so many colleagues have thought the same to only find they either never got to retirement or were not capable of enjoying such a car. So what with this and indeed Covid I am not prepared to wait and see, so it is coming a few years early. This is why I sort of need it to work for both enjoyment and as a daily. For me I dont want it sitting around as a weekend car so hence my thoughts re what MPG I would get from it need to be considered or at least understood. I want to use it, drive it in a spirited way but also have a great car to drive to work in without pushing it all the while.

Have you factored in the actual difference in cost for a year of running an average of 18mpg, 23mpg, and 28mpg? Work that out in absolute terms and if the additional yearly cost for the lowest figure is outweighed (subjectively, to you) by the experience in owning the car then you're laughing, as you should hit more than 18mpg! If not, you can work out exactly what figure you feel comfortable with ... Example, assuming 10k miles as your yearly commute, 98 RON average price in the UK: 10k miles / 18mpg = 556 imperial gallons x 4.54609 = 2526 litres x £1.386 = £3500 per year 10k miles / 23mpg = 435 imperial gallons x 4.54609 = 1977 litres x £1.386 = £2740 per year; which is ~ £63 per month saving 10k miles / 28mpg = 357 imperial gallons x 4.54609 = 1624 litres x £1.386 = £2250 per year; which is ~ £104 per month saving Is £104 per month acceptable for you? Is £63 per month acceptable? Adjust mileage and mpg figures as you see fit. This is the best way to work this out IMO (unless a form of emissions tax comes into play, which I doubt it will for you) as you look at what actual cost you consider acceptable rather than having an arbitrary mpg figure which may not relate (i.e. if your commute is 5k miles per year, it will only cost you an additional £52 per month (less than one fill-up) to run a car with 18mpg vs one with 28mpg, which may be worth the difference for a 4.0L Porsche ...???) [I think you will hit 23mpg or better easily (likely more), if you drive the commute as a commute] [This doesn't factor in likely more expensive parts & service costs - after initial free period - of owning a 4.0L Porsche vs a M4 but also doesn't factor in the likely much better residuals when you come to sell the car ... I'd bet, in real terms, you'd be quids-in with the Porsche vs the M4] Edited by Evo9lution on Monday 3rd May 23:35

Evo9lution said: Have you factored in the actual difference in cost for a year of running an average of 18mpg, 23mpg, and 28mpg? Work that out in absolute terms and if the additional yearly cost for the lowest figure is outweighed (subjectively, to you) by the experience in owning the car then you're laughing, as you should hit more than 18mpg! If not, you can work out exactly what figure you feel comfortable with ... Example, assuming 10k miles as your yearly commute, 98 RON average price in the UK: 10k miles / 18mpg = 556 imperial gallons x 4.54609 = 2526 litres x £1.386 = £3500 per year 10k miles / 23mpg = 435 imperial gallons x 4.54609 = 1977 litres x £1.386 = £2740 per year; which is ~ £63 per month saving 10k miles / 28mpg = 357 imperial gallons x 4.54609 = 1624 litres x £1.386 = £2250 per year; which is ~ £104 per month saving Is £104 per month acceptable for you? Is £63 per month acceptable? Adjust mileage and mpg figures as you see fit. This is the best way to work this out IMO (unless a form of emissions tax comes into play, which I doubt it will for you) as you look at what actual cost you consider acceptable rather than having an arbitrary mpg figure which may not relate (i.e. if your commute is 5k miles per year, it will only cost you an additional £52 per month (less than one fill-up) to run a car with 18mpg vs one with 28mpg, which may be worth the difference for a 4.0L Porsche ...???) [I think you will hit 23mpg or better easily (likely more), if you drive the commute as a commute] [This doesn't factor in likely more expensive parts & service costs - after initial free period - of owning a 4.0L Porsche vs a M4 but also doesn't factor in the likely much better residuals when you come to sell the car ... I'd bet, in real terms, you'd be quids-in with the Porsche vs the M4] Many thanks. This is so helpful and has made me think a wee bit wider than I was. An additional cost of £63 a month is not a worry, but wider than this the savings re the residual values of a Porsche compared to a BMW M4 helps. The BMW has taken quite a hit and I can see that this is less likely on a Porsche. Edited by Evo9lution on Monday 3rd May 23:35

RTA3 said: Lonely said: RTA3 said: This is helpful. I won’t drive it like a nun, but not always up for a a spirited drive to work early in the morning when you are set for a long hard day. If I can get around 25mpg on journeys like this, I would be more than happy. I'm interested in your thought process. Why do you want something like this for a daily when you won't be using it to full potential? Why not have something basic for regular commuting and the GTS for fun and the occasional commute when you feel like it? Obviously not saying anything's wrong with your choice but just keen to understand why if MPG is a concern. I had always thought I would get into a porsche at the point of retirement. However so many colleagues have thought the same to only find they either never got to retirement or were not capable of enjoying such a car. So what with this and indeed Covid I am not prepared to wait and see, so it is coming a few years early. This is why I sort of need it to work for both enjoyment and as a daily. For me I dont want it sitting around as a weekend car so hence my thoughts re what MPG I would get from it need to be considered or at least understood. I want to use it, drive it in a spirited way but also have a great car to drive to work in without pushing it all the while. Totally understand. This is exactly what happened to me. Retirement was going to be the lift off point then a close friend who was also in the same job died of bowel cancer and didn't see any of his retirement plans. After emotional discussion with my wife I bought my Cayman S whilst still working. I downsized my MG ZT190 to a more suitable Mazda 2 for the run around/commute but when I eventually retired I found it was surplus to requirements and gave it to my daughter in law! Still got the Porsche 11 years down the line (been retired 5). Still not using it as much as I should but days out are all the more enjoyable when they do come around. Luckily we also have my wifes Golf for anything 'ordinary'

Lonely said: Totally understand. This is exactly what happened to me. Retirement was going to be the lift off point then a close friend who was also in the same job died of bowel cancer and didn't see any of his retirement plans. After emotional discussion with my wife I bought my Cayman S whilst still working. I downsized my MG ZT190 to a more suitable Mazda 2 for the run around/commute but when I eventually retired I found it was surplus to requirements and gave it to my daughter in law! Still got the Porsche 11 years down the line (been retired 5). Still not using it as much as I should but days out are all the more enjoyable when they do come around. Luckily we also have my wifes Golf for anything 'ordinary' Thank you for this. It is good to hear from somebody who understands and sadly has seen this happen as well. Life is too short and whilst my pension would pay for my Porsche outright, I just dont want to wait and perhaps not be able to enjoy it or indeed have one. I too will have use of a second and third car - these being my wife’s Q5 and my daughters Aygo. Just need to get my wife to see and drive the car and then will order.