First long trip mpg

[Lexman8]

Been up to Scotland for the weekend; a round trip of 540 miles. Fuel consumption on the 4 main legs was:

• Wakefield to Northumberland (M1/A1(M)/country roads) - 46.8 mpg
• Northumberland to Glasgow (country roads/Edinburgh ring road/M8) - 42.6 mpg
• Glasgow to Carlisle (M74/M6) - 46.8 mpg
• Carlisle to Wakefield (M6/A66/A1(M)/M1) - 48.4 mpg

Average for the 4 legs - 46.2 mpg. The Northumberland to Glasgow leg was the worst because the first half of it was on single carriageway roads, congestion on the Edinburgh ring road, major road widening on the M8 and getting through Glasgow during the rush hour! So all those things considered, it actually wasn't that bad.

Pilot Assist was set to 70 mph and on 80% of the time. It was fine on motorways and 'A' roads, not so good on twisting country roads and I wasn't very happy with steering assist through roadworks with narrow lanes, eg where they're upgrading the A1 to motorway, so I turned it off there.

I filled the tank when I left home and there's now 188 miles remaining.

[Deman77]

Kids, dogs, suitcases? Comfort or Eco
Mode?

Very impressive considering 80% pilot assist - those things are not clever for fuel.

[neon]

Originally Posted by Lexman8

Been up to Scotland for the weekend; a round trip of 540 miles. Fuel consumption on the 4 main legs was:

• Wakefield to Northumberland (M1/A1(M)/country roads) - 46.8 mpg
• Northumberland to Glasgow (country roads/Edinburgh ring road/M8) - 42.6 mpg
• Glasgow to Carlisle (M74/M6) - 46.8 mpg
• Carlisle to Wakefield (M6/A66/A1(M)/M1) - 48.4 mpg

Average for the 4 legs - 46.2 mpg. The Northumberland to Glasgow leg was the worst because the first half of it was on single carriageway roads, congestion on the Edinburgh ring road, major road widening on the M8 and getting through Glasgow during the rush hour! So all those things considered, it actually wasn't that bad.

Pilot Assist was set to 70 mph and on 80% of the time. It was fine on motorways and 'A' roads, not so good on twisting country roads and I wasn't very happy with steering assist through roadworks with narrow lanes, eg where they're upgrading the A1 to motorway, so I turned it off there.

I filled the tank when I left home and there's now 188 miles remaining.

That will do for me.

[Lexman8]

No kids nor dogs. No roof-rack. Couple of suitcases and some bits and pieces in boot. Full fuel load from the start. A tank-full of diesel in the XC90 weighs about 60kg.

Mixture of Comfort and Eco with aircon always on. I've found that Eco is fine cruising along the motorway at 70. There's still some oomph available when you need it. With Eco mode I noticed one time that it said 'Coasting' was available. I need to check if I have to do something to engage that or if it does it itself.

I reckon I could add a couple of mpg by not using Pilot Assist. A good human driver would smooth out the braking and acceleration better than it does. Also, the constant small steering corrections and lane wandering must impact fuel consumption too. Would like to see 50 mpg at least once.

Also, it was only 12c earlier this morning before I left so I set pre-conditioning on from my phone just to test it. It turned on the pre-heater for a while so there was fuel used for that.
_

[Lozza]

Coasting function is available in Eco by default, when the accelerator pedal is released, in D, not in Cruise Control, gradient not greater than 6% and when between 40-87mph.
Engine braking effectively ceases and gearbox disengages from the engine allowing revs to drop.

[BTXC90]

Originally Posted by Lexman8

Been up to Scotland for the weekend; a round trip of 540 miles. Fuel consumption on the 4 main legs was:

• Wakefield to Northumberland (M1/A1(M)/country roads) - 46.8 mpg
• Northumberland to Glasgow (country roads/Edinburgh ring road/M8) - 42.6 mpg
• Glasgow to Carlisle (M74/M6) - 46.8 mpg
• Carlisle to Wakefield (M6/A66/A1(M)/M1) - 48.4 mpg

Average for the 4 legs - 46.2 mpg. The Northumberland to Glasgow leg was the worst because the first half of it was on single carriageway roads, congestion on the Edinburgh ring road, major road widening on the M8 and getting through Glasgow during the rush hour! So all those things considered, it actually wasn't that bad.

Pilot Assist was set to 70 mph and on 80% of the time. It was fine on motorways and 'A' roads, not so good on twisting country roads and I wasn't very happy with steering assist through roadworks with narrow lanes, eg where they're upgrading the A1 to motorway, so I turned it off there.

I filled the tank when I left home and there's now 188 miles remaining.

Thanks for the detail. That is impressive overall I think.

If any new XC90 owner is missing from the forum over the weekend, we must expect a review of long trip on Monday

[reggie59]

Originally Posted by Lexman8

Been up to Scotland for the weekend; a round trip of 540 miles. Fuel consumption on the 4 main legs was:

• Wakefield to Northumberland (M1/A1(M)/country roads) - 46.8 mpg
• Northumberland to Glasgow (country roads/Edinburgh ring road/M8) - 42.6 mpg
• Glasgow to Carlisle (M74/M6) - 46.8 mpg
• Carlisle to Wakefield (M6/A66/A1(M)/M1) - 48.4 mpg

Average for the 4 legs - 46.2 mpg. The Northumberland to Glasgow leg was the worst because the first half of it was on single carriageway roads, congestion on the Edinburgh ring road, major road widening on the M8 and getting through Glasgow during the rush hour! So all those things considered, it actually wasn't that bad.

Pilot Assist was set to 70 mph and on 80% of the time. It was fine on motorways and 'A' roads, not so good on twisting country roads and I wasn't very happy with steering assist through roadworks with narrow lanes, eg where they're upgrading the A1 to motorway, so I turned it off there.

I filled the tank when I left home and there's now 188 miles remaining.

Wow! My xc90 Mark I would do 30-32 in the same condition. my BMW 530d would struggle to match this numbers.

These are incredible mpg and validates Volvo downsizing strategy