Remap - potential MPG gains?

[shrink]

So as some of you will know, I'm new to the world of Roc ownership and I'm hugely enjoying my R!

However, a change in personal circumstances means I'm likely to need something just a tiny little bit more economical.

My last long motorway trip, I took it VERY easy on the roc, and drove between 65-70 most of the way, very gentle throttle, and absolutely no flooring it at any point. I was barely able to squeeze 34mpg out of the car. While not a problem in itself, I need a car that's capable of at least 36-37mpg on longer trips to make future plans feasible.

Would a remap offer any likely gains in MPG when driving gently? e.g. cruise control at 70mph. Would 3-4mpg be in any way likely?

Would appreciate the input of users who have gone through this process.

I don't mind worse economy when I'm hoofing the car around at weekends, and for short trips in town. I'm more worried about being able to get high 30's on a long motorway run!

[Boydie]

Very doubtful

If you drive like a granny you may get a few points here and there due to the increase toque figures produced by the map but ultimately thats not what you tune your car for

With the price of fuel these days and 34mpg in a R I would be laughing all day

[Boydie]

In my 8P S3 with Revo 2+ around 370bhp my car was between 27-30mpg which was awesome

Now in my R with standard power I would be in around the same to be honest and probably less now since I have moved house and more centrally based with lots of stop starts

[shrink]

The issue for me is a new job that gives a car allowance but only pays 12p per mile. To break even on mileage I'd need to average around 35mpg on business trips.

Hence why anything to make the R a couple of points higher up would be awesome!

[Roy_01]

I think saving the money for the remap and spend it on fuel is better when break even is only such low mpg difference.

[Richrush]

Hi, I've managed 40mpg on a trip. The key is to drive no faster than 60mph. It seems that big bumper at the front is hard to push though the air! The most economical speed is about 40 - 50 mph in 6 th gear, well that's what I found. Must say that 40mpg trip was very boring and not what the R's all about.

As others have said, save the money from a remap and put that towards your fuel bill.

[shrink]

I don't think aerodynamics are the issue

More that the scirocco is very low geared and sits at pretty much 3000rpm at 70mph! That's very high and is already above the peak torque point of the motor so is starting to use a fair bit of turbo.

All makes it far too thirsty at motorway speed. Id guess at 60 it'll be revving much lower and use a hell of a lot less fuel.

Add in the rotational mass of 19" wheels, and the friction of 235 wide sports oriented tyres and it's all a recipe for piss poor economy!

I actually find the R really quite frugal in town and on A roads as a result. It's just the long range cruise where it disappoints. They needed to make 6th a much longer gear!

[Cuprabob]

The issue for me is a new job that gives a car allowance but only pays 12p per mile.

You may be able to claim tax relief on the difference between the HMRC 45p rate allowed and the 12p for the first 10K miles per annum.

[shrink]

They provide a basic car allowance on top
Of mileage. That's why mileage is pretty low.

[3t3p]

frugal in town ?! wtf
it's the opposite and that makes sense

low 20's in town driving 30-32mpg on motorway cruises

[shrink]

That's my point though, for the performance level 23mpg in town is really quite good. I rarely got better from much smaller engineer cars. And even my old a4 diesel couldn't do much better than high 20's in town.

But on the motorway this engine is disproportionately thirsty. Mostly as a result of stupid gearing. There's more than enough power on tap to hold 70mph from as little as 1200-1500rpm. There's just no need to have it screaming along at 3000rpm on the motorway.

Tbh that's my only quibble with an otherwise outstanding car

[Viking]

The issue for me is a new job that gives a car allowance but only pays 12p per mile. To break even on mileage I'd need to average around 35mpg on business trips.

Hence why anything to make the R a couple of points higher up would be awesome!

Simply claim the rest of the 45p per mile tax allowance from the government.

[shrink]

Can you do that on cars above certain co2 level?

[Viking]

45p per mile for the first 10000 miles is the government figure. I don't think it's relevant to the engine size and co2 emissions as that's more for the company car tax and Benefit In Kind issue. I'd look into this first of all before you start spending money trying to squeeze a few mpg out of the car, and spending more money on a remap that you're ever likely to save in fuel costs.

[Viking]

Oh, and after 10000 miles you can claim 25p per mile.

[3t3p]

I see what you mean then about town being relatively ok.

Definately agree, to do 85mph you're looking at 3,250rpm!

No idea why sixth is so short, they could have left all the other gears one to five as they are for rapid progress but make sixth uber long.

I actually reckon the scirocco is pretty aerodynamic, it's quiet inside and very curvy, which below subsonic speeds is what you want. Sharp points are actually detrimental to aerodynamics below the speed of sound. Think thrust SSC vs Bugatti Veyron.

Mate's M235i has 8 gear auto box, he cruises on motorway at 2000rpm!

[Cuprabob]

45p per mile for the first 10000 miles is the government figure. I don't think it's relevant to the engine size and co2 emissions as that's more for the company car tax and Benefit In Kind issue. I'd look into this first of all before you start spending money trying to squeeze a few mpg out of the car, and spending more money on a remap that you're ever likely to save in fuel costs.

As I understand it, you can't claim the difference, only the tax on the difference.

[Viking]

You can claim the difference but it's refunded as a tax deduction or rebate.

[dimexi]

I think saving the money for the remap and spend it on fuel is better when break even is only such low mpg difference.

^^^ this - especially with low pump prices atm.