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[thewelshman]

53mph on a Motorway... I know your sort  ....  

Interestingly, I get about 32-34mpg if I set the cruise at 60 - But this increases to 34-35 if I set the cruise to 70!

My cruising speed on the motorway is about 76mph usually, works well for me, both economy wise, and to keep up with traffic flow.

Today, coming from Cardiff to Gloucester, on the M4/M5, I was playing with the loud pedal, and my magic wand (gear stick!) and averaged less than 20mpg. Do the maths!

I get the same in my old 2.5 CD, 70mph brought up 32-33 push it up to 80 and get 33-34. I guess the pooter thinks because I go faster, I'll get there quicker and use less motion lotion.

[Kevin Wood]

If economy is your thing I managed an indicated 37 MPG average on the MID (MID is perhaps 1MPG optimistic on my car) on the motorway (in no hurry) at 60-65 on the cruise control.

The temptation to just mash the right pedal into the carpet was horrible, though.  

Kevin

[thewelshman]

If economy is your thing I managed an indicated 37 MPG average on the MID (MID is perhaps 1MPG optimistic on my car) on the motorway (in no hurry) at 60-65 on the cruise control.

The temptation to just mash the right pedal into the carpet was horrible, though.  

Kevin

With my 3.2, I've had to put my right foot on a diet and go into tickling mode.

[Andy B]

........
The temptation to just mash the right pedal into the carpet was horrible, though.  
.......

Buy a 1.7 low blow Astra. It doesn't matter whether you bury the throttle or not ...... it doesn't make any difference to the speed!      

[chrisdb]

I am convinced that 3.0 Omegas like 90 mph, and positive the faster you go the more MPG I get

Plus if a nice Policeman stops you for speeding I would prefer to get stopped doing 90 than 75

If I do 80-90 constant on the motorway I get 32mpg over 150 miles. If I go slower I get 31. If I press ECO I get 30.4 @ 70mph.

[TheBoy]

53mph on a Motorway... I know your sort  ....  

Interestingly, I get about 32-34mpg if I set the cruise at 60 - But this increases to 34-35 if I set the cruise to 70!

My cruising speed on the motorway is about 76mph usually, works well for me, both economy wise, and to keep up with traffic flow.

Today, coming from Cardiff to Gloucester, on the M4/M5, I was playing with the loud pedal, and my magic wand (gear stick!) and averaged less than 20mpg. Do the maths!

My 3.0 pre facelift must be goosed then. The very best I've ever seen was a journey down south somewhere  :-?   for an Autobahnstormers AGM (pity I didn't go this year to boost numbers!  ) and I got about 27 mpg. Early-ish Sunday morning, cruise set to 75 mph & I didn't touch a pedal all the way down. Around town I get around 21 - 22mpg SWMBO can get it down to 18!

Best I've had from my MV6 auto is 33mpg average over a 2k trip, mostly 85mph (ish ), got 500m to a tank.

[Martin_1962]

A mate of mine used to have family in Tewkesbury. He was telling me he found himself driving up that way on the day of princess DI's funeral, on a very empty bit of motorway, in a 3.0 Turbo Supra. Guess what happened next?

 8-)

Kevin

Got pulled?

[Andy B]

......
Best I've had from my MV6 auto is 33mpg average over a 2k trip, mostly 85mph (ish ), got 500m to a tank.

So .... what's wrong with mine then?   That £30 spent in the AutoTrader couldn't sort!  
Still, I've just filled the diseasal Astra up after 451 miles with 45 litres.

[Richy]

My 3.0 gets about 22-25 on short runs and about the 19-20 when towing.