750s or...?

Author
Discussion

NRG1976

1,197 posts

12 months

Saturday 27th January
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Lovely cars you both have, hope you enjoy in good health!

br d

8,455 posts

228 months

Tuesday 26th March
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Getting a 'present' delivered from McLaren tomorrow for being a 750S owner, no idea what it will be, I presume others owners are getting the same?


I have to say McLaren have been top notch so far on this purchase, calling me regularly to make sure there are no issues and just generally being very helpful and proactive.

964Cup

Original Poster:

1,470 posts

239 months

Tuesday 26th March
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Your experience and mine differ, then. I don't think McLaren corporate know that I exist, and Hatfield - while helpful with service requests - have not otherwise involved themselves since I took delivery. Let me know what you get...

br d

8,455 posts

228 months

Wednesday 27th March
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It was a picture of my car, very classy.

964Cup

Original Poster:

1,470 posts

239 months

Wednesday 27th March
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From corporate or from your dealer? I got something similar from McManc with my 720 Coupe.

br d

8,455 posts

228 months

Friday 21st June
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Hi guys, I lost touch with this thread but I have a question for owners, this was discussed previously on PH somewhere but I can't find it.
What is the supposed capacity of the fuel tank, I'm on a euro trip and it's getting on my nerves.
Did I read that it should be 66 litres? It starts to run out very quickly once you hit 60 mile range and I've had to panic find fuel a couple of times on these long French routes. When I fill up even if I'm down below 50 mile range I can only squeeze 50 litres in. Does this mean I can comfortably add 75 miles or so to whatever the gauge is telling me?

And a side issue. Each time I've filled up here I pay at the pump with a debit card, I've just looked at my statement and I'm getting massively overcharged, 95 euros at the pump coming out as 130 quid, that sort of level.
I found some vague reference online to French petrol stations taking a retention for 7 days or something like that, anyone have experience of this?

I'll be paying cash from now on but it's annoying.
And I'm with Barclays so I can't be bothered to sit on the phone talking to a machine for an hour and a half before I get to ask someone this question, I'm on holiday!
Thanks.

samoht

5,864 posts

148 months

Friday 21st June
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https://cars.mclaren.com/gb-en/750s
Fuel tank capacity: 72 litres

You could try flicking to track mode where the fuel is shown as a % rather than range, at least that would get rid of the inherent guessing of the economy. Unsure how much 'reserve' there may be below zero. At 25mpg the full 72L should give 395 miles.


DeuceDeuce

366 posts

94 months

Friday 21st June
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br d said:
And a side issue. Each time I've filled up here I pay at the pump with a debit card, I've just looked at my statement and I'm getting massively overcharged, 95 euros at the pump coming out as 130 quid, that sort of level.
I found some vague reference online to French petrol stations taking a retention for 7 days or something like that, anyone have experience of this?

I'll be paying cash from now on but it's annoying.
And I'm with Barclays so I can't be bothered to sit on the phone talking to a machine for an hour and a half before I get to ask someone this question, I'm on holiday!
Thanks.
When you put your card in the machine will pre-authorise the maximum amount it will allow you to spend on fuel. So €130 perhaps (but it will vary by which petrol station you use) and that is the amount that will show on your statement until it reconciles with the actual amount spend you did on fuel. This is usually a few days later and in dozens of French fill ups I’ve never had a problem with being charged the wrong amount.

Have a great trip. Look forward to the updates.

Ken_Code

1,484 posts

4 months

Friday 21st June
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You may not want to do this while on a trip, but I’ve generally run my cars to empty while carrying a few litres of fuel to find out how much range is left after it says zero.

Of course you need to pick your venue, but it was worth doing for me as I do like to know how far I can actually go before running dry.

supersport

4,124 posts

229 months

Friday 21st June
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On my 720 I've found that when the range is down to about 30 miles you can only squeeze 47 litres in, so there's a lot left out of the 72 litre tank. I find the way it calculates range to utterly frustrating.

Once it gets into the last quarter I am looking for a decent petrol station.

On a recent trip a my friends GT3 Touring used €0.06 less fuel than me having both filled up at the same in before crossing to France.

964Cup

Original Poster:

1,470 posts

239 months

Friday 21st June
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McLaren confirmed 72 litres tank capacity to me. The gauge is basically useless, as it was on the 720. I think you need to differentiate between motorway and any other kind of driving. In a steady state cruise, I work to a 300 mile range and basically ignore the gauge. Reset the trip when you fill up and refill as you reach 300 and you should end up putting somewhere between 60 and 65 litres back in.

In "spirited" driving, I refill a) when I can and b) when the gauge hits red, at which point I'm probably putting in 50-55 litres or thereabouts. But since proper use sees about 10mpg, the remaining range at that point is somewhere around 40 miles to bone dry.

The 750 is notably less fuel-efficient than the 720, presumably mostly because of the shorter gearing.

seefarr

1,493 posts

188 months

Friday 21st June
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Brad, where's the trip write up?!

Ken_Code said:
You may not want to do this while on a trip, but I’ve generally run my cars to empty while carrying a few litres of fuel to find out how much range is left after it says zero.

Of course you need to pick your venue, but it was worth doing for me as I do like to know how far I can actually go before running dry.
Please don't do this with a turbo car like a McLaren - if it runs lean while you're on it, you'll do an engine.

Ken_Code

1,484 posts

4 months

Friday 21st June
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seefarr said:
Please don't do this with a turbo car like a McLaren - if it runs lean while you're on it, you'll do an engine.
Don’t be daft. Cars don’t break their engines through running out of petrol once.

seefarr

1,493 posts

188 months

Friday 21st June
quotequote all
Ken_Code said:
seefarr said:
Please don't do this with a turbo car like a McLaren - if it runs lean while you're on it, you'll do an engine.
Don’t be daft. Cars don’t break their engines through running out of petrol once.
Thanks for your overly aggressive reply, you'll fit in well around here.

Ken_Code

1,484 posts

4 months

Friday 21st June
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seefarr said:
Thanks for your overly aggressive reply, you'll fit in well around here.
There was nothing aggressive about it.

It’s weird how the manual for my turbo cars don’t tell me about this supposed danger of running out of petrol. Could you post a picture of where yours does?

seefarr

1,493 posts

188 months

Friday 21st June
quotequote all
Ken_Code said:
There was nothing aggressive about it.

It’s weird how the manual for my turbo cars don’t tell me about this supposed danger of running out of petrol. Could you post a picture of where yours does?
Turbo cars don't love running lean at full throttle is what I was suggesting, but it's a thread about 750s so this is boring!


Ken_Code

1,484 posts

4 months

Friday 21st June
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seefarr said:
Turbo cars don't love running lean at full throttle is what I was suggesting, but it's a thread about 750s so this is boring!
That’s quite a moving of the goal posts, no-one said to do anything at full throttle.

964Cup

Original Poster:

1,470 posts

239 months

Friday 21st June
quotequote all
Not claiming expertise but my understanding of the very conservative McLaren fuel gauge is precisely to prevent running out of fuel (or fuel surge) particularly when on track.

Ken_Code

1,484 posts

4 months

Friday 21st June
quotequote all
964Cup said:
Not claiming expertise but my understanding of the very conservative McLaren fuel gauge is precisely to prevent running out of fuel (or fuel surge) particularly when on track.
I’d not really want it running out at full throttle and high revs either, but I wasn’t suggesting anyone do that.

I think moving away from a normal gauge is a really bad idea given how massively variable the “range remaining” number is.

seefarr

1,493 posts

188 months

Friday 21st June
quotequote all
Ken_Code said:
seefarr said:
Turbo cars don't love running lean at full throttle is what I was suggesting, but it's a thread about 750s so this is boring!
That’s quite a moving of the goal posts, no-one said to do anything at full throttle.
seefarr said:
if it runs lean while you're on it, you'll do an engine.
smile