MPG and CO2 figures

[gizzardio]

Hi

I'm a new owner of a GT and was looking at the figures available for MPG and CO2. The website :

https://www.alpine-cars.co.uk/range/a110-gt.html

states WLTP C02 = 145 and WLTP mpg = 44.1. This is interesting because the CO2 figure here means that we shouldn't be paying that inflated tax band in the first year rate of £585 but £230 which is a significant difference. The DVLA has the figure at over 151g/km which must have been supplied by Alpine.

But weirdly, the brochure states 154-160 g/km and 6.8-7.0g/km = 40.35mpg for the GT.

When I asked Alpine about the mpg they said it's a mistake and the correct figure is as per the brochure at 40.36mpg.

I guess then the higher g/km figure would be correct unfortunately but worth asking the question...

PS - in my short time driving and not ragging it I struggle to average out combination of A roads and motorway at more than 35mpg

[Whaleblue]

Isn’t the high(er) road tax because of the >£40k price?

[gizzardio]

It's both. First year tax is mainly due to CO2 emissions then the next year up to 5 years is surcharged with £40k+ at £355 over the basic rate of £165. So that's totally fine. Just that first year in question.

At least that's how I understand it's explained here

https://www.gov.uk/vehicle-tax-rate-tables

[Hoofty]

MPG wise - not very scientific but I didn't see north of 40mpg until it was run-in. There's a fair difference between a motorway run at 80 leptons vs 70, and you'll need a lot of willpower (or unavoidable traffic) to return mid forties plus - constant 50-ish mph seems to be the most efficient.

However, this should never deter you from getting back to mid thirties by having some fun.

[bcr5784]

Hoofty said:

MPG wise - not very scientific but I didn't see north of 40mpg until it was run-in. There's a fair difference between a motorway run at 80 leptons vs 70, and you'll need a lot of willpower (or unavoidable traffic) to return mid forties plus - constant 50-ish mph seems to be the most efficient.

However, this should never deter you from getting back to mid thirties by having some fun.

My impression is that the latest 300bhp engine isn't as outstanding , in economy terms, as previous engines. High 30s or low 40s are no problem without any conscious effort at economy with my PE on a good run at vaguely legal speeds. Short commuting runs, especially in the low temps we have recently had, bring averages down to the low 30s, but I've never got below 30 on the road over a tankfull. That's according to the computer - but it doesn't seem to be more than the odd mpg or so optimistic.

[Hoofty]

You're right about no more than the odd mpg more optimistic. As I love a good spreadsheet, can confirm mine has over-read by a mere 2% over the course of 71 fills to date - that equates to 0.6mpg given my average.

The French seem to be very good at this (not the first French car I've run in the 1-2% optimistic bracket - whereas my old TT over-read by a whopping 12% on average...)

[gizzardio]

Hmmmm. I'm getting way less. Like high 20s for mixed use driving without going excessively hard. ie. not above 3.5k rpm generally as per the running in advice.

If I refer to the 'live' mpg when just doing 60mph down a motorway it hovers around late 30s mpg which sounds also v low compared to expected.

[fuzzy-si]

Does sound low.

This is mine after a trip up the M1/M6Toll last week.

[bcr5784]

gizzardio said:

Hmmmm. I'm getting way less. Like high 20s for mixed use driving without going excessively hard. ie. not above 3.5k rpm generally as per the running in advice.

If I refer to the 'live' mpg when just doing 60mph down a motorway it hovers around late 30s mpg which sounds also v low compared to expected.

I'm not sure the live mpg is the one to go with - that varies enormously with wind and gradient, the average is more representative. I'd certainly expect well into the 40s at 60mph.

[gizzardio]

bcr5784 said:

I'm not sure the live mpg is the one to go with - that varies enormously with wind and gradient, the average is more representative. I'd certainly expect well into the 40s at 60mph.

yeah, agree, I just mentioned this on top of what I reported as the average of high 20s just as another indicator.

[Simon Owen]

This was after a very spirited trip round the 500, plus some motorway stuff at the start & end.

[bram070]

Assuming that a mile is 1.609344 kilometres and a gallon 4.546092 litres, my 7.60L/100km average converts to 37.2 MPG. The car is not my daily driver and most of the 5,500 miles were driven on local French roads.

https://www.autoweek.nl/verbruik/29634/alpine-a110...

[Meonstoke]

My current average is 7.2 Litres per 100KM, an average over 10K KM driven so far. On our trip to south France and south Germany via north Italy, we saw 6.8 Litres per 100KM on the motorways if we backed off and stayed within speed limits. Otherwise about 7.0 Litres per 100 KM with some fast driving moments. Ours has 252 PS and always use Shell 98 Octane. For a 300PS motor with improved torque, I can well imagine the fuel economy will be worsened slightly.

[LE62NDE]

Just back from a round trip, Hertfordshire - South Devon - Hertfordshire, 550 miles @ 38 mpg. Mrs L and I shared the driving, and with my co-pilot at one point saying "It doesn't feel like we're going that fast" I think you can safely assume that at least some of the driving was what the handbook would call 'sporty'...