What V8 has a respectable MPG?

[MagicalTrevor]

A purely academic question. I was just reading the road test on the SLK55 AMG and the low CO2 and MPG surprised me at 195g and 33.6MPG respectively.

So what V8 (petrol!!) cars are out there that achieve a decent/respectable MPG (I don't care about CO2) that wouldn't make you wince when you visit a petrol station?

I think the target should be around the 30mpg. 20 is too low for my pockets!

[RenesisEvo]

Two things come to mind - one, is that respectable MPG from a V8 is oxymoronic, and two, that figure is likely to be the manufacturer's bench test number, it might not be straightforward achieving that on the road.

[mikey k]

I'm out - mine averages 17.2 mpg

[Garlick]

I don't know the actual MPG figure, as I've never bothered to check, with with a bit of short shifting and a steady 70-75mph cruise my Chim can be very easy on fuel. It's obviously not economical in the truest sense of the word, but nowhere near as bad as you might think.

Light weight and manual gearbox helps enormously.

The LS, however, has given me 17.9 average over the last 1200 miles.

[redgriff500]

MagicalTrevor said:

A purely academic question. I was just reading the road test on the SLK55 AMG and the low CO2 and MPG surprised me at 195g and 33.6MPG respectively.

So what V8 (petrol!!) cars are out there that achieve a decent/respectable MPG (I don't care about CO2) that wouldn't make you wince when you visit a petrol station?

I think the target should be around the 30mpg. 20 is too low for my pockets!

No production V8 driven in real world conditions gets anything like 30mpg.

Yes you might get that driven at a 60mph cruise but IME you are lucky to get 20.

[anonymous-user]

A 6.2 litre Corvette will give you 32.5 mpg highway / 20 city and is exempt from gas-guzzler taxes.

[MagicalTrevor]

Ok, I accept that V8 != Economy and MB's figure of 33.6MPG will be unachievable but it's impressive that there is a step in the right direction for big engines and if that keeps V8s then I'm all for it.

@Garlick... you started this on Saturday night you rascal! Making me want a V8...

[5lab]

yeah the chevvy engines are very good - I think the camaro has similar figures to that - I had one for a month, and wasn't paying the fuel (so not exactly pottering around) and averaged 25mpg out of it

[Mr Gear]

5 USA said:

A 6.2 litre Corvette will give you 32.5 mpg highway / 20 city and is exempt from gas-guzzler taxes.

That's dreadful.

[Dave_ST220]

RenesisEvo said:

Two things come to mind - one, is that respectable MPG from a V8 is oxymoronic, and two, that figure is likely to be the manufacturer's bench test number, it might not be straight forward it will not be possible to achieve that on the road.

[excel monkey]

Mr Gear said:

5 USA said:

A 6.2 litre Corvette will give you 32.5 mpg highway / 20 city and is exempt from gas-guzzler taxes.

That's dreadful.

Are those figures based on US gallons or UK gallons?

[5lab]

Mr Gear said:

5 USA said:

A 6.2 litre Corvette will give you 32.5 mpg highway / 20 city and is exempt from gas-guzzler taxes.

That's dreadful.

is it? what else has 650bhp and is significantly better?

http://www.chevrolet.co.uk/cars/corvette/corvette-...

331g/km combined

[Mr Gear]

5lab said:

Mr Gear said:

5 USA said:

A 6.2 litre Corvette will give you 32.5 mpg highway / 20 city and is exempt from gas-guzzler taxes.

That's dreadful.

is it? what else has 615bhp and is significantly better?

http://www.chevrolet.co.uk/cars/corvette/corvette-...

331g/km combined

The question was not how much power it has, but what economy it has, and the economy is indeed dreadful.

Nice bhp figure though

[Marquis Rex]

Mr Gear said:

5 USA said:

A 6.2 litre Corvette will give you 32.5 mpg highway / 20 city and is exempt from gas-guzzler taxes.

That's dreadful.

Why is it dreadful?

OP said:

I think the target should be around the 30mpg.

Original poster set down the guidelines.
Or is it really that it doesn't meet your self-righteous-big engine-hating sensibilities?

[anonymous-user]

UK gallons. The US figures are 16 city and 26 highway. 0-60 is 4.3 sec and top speed around 180 mph.

[chevy-stu]

Surely it's more to do with usage and final gearing especially on the motorway...

[Mr Gear]

Marquis Rex said:

Original poster set down the guidelines.
Or is it really that it doesn't meet your self-righteous-big engine-hating sensibilities?

Unless you only ever drive on the highway at a constant speed and a warm engine, it will NEVER achieve 30mpg. The city figure is 20mpg. That should tell you all you need to know. It will NOT meet the OPs criteria in a million years.

I would love to be wrong, I would love to be able to have a big engine that sipped at fuel, but they don't exist. Sorry if that is news to you.

[plasticpig]

A V8 car which is fitted with an LPG tank as well as a fuel tank.

[Garlick]

MagicalTrevor said:

@Garlick... you started this on Saturday night you rascal! Making me want a V8...

Don't use me as an excuse!

[excel monkey]

Marquis Rex said:

Or is it really that it doesn't meet your self-righteous-big engine-hating sensibilities?

You should have seen him on the Grand Cherokee SRT8 thread a few months back...