General topics » 1200 vs 1250 Fuel Consumption

I've just spent the past few days in company with 3 1250 GS Adventure bikes around Scotland. I note that the 1250 model boasts better fuel consumption in the BMW blurb. I was getting a little less than 10% greater fuel consumption than the GSA's.

I wonder what those who've had both in RS form find?

Did I have trouble keeping up? Of course not.....

On my 2020 R1250RS, I saw appreciably better and more consistent fuel mileage when running premium (US premium = 93 octane). I am not one to generally believe statements like this and don't expect others to. I stumbled on to this when I got gas at station with only 87 or 93, so I bumped up from required 89. I cannot explain this, but find it improved mileage 5-10% over most riding conditions and I'm now looking at an indicated 200-220 miles/tank when full (or ~48 mpg, indicated)

Zitat von backRoadS im Beitrag #2

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. I stumbled on to this when I got gas at station with only 87 or 93, so I bumped up from required 89. )

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I've been using 91 in the RS since buying it. I get 44-50 mpg depending on how I'm scooting on the motor. I've seen 58 a few times and 60mpg once. 46-47 would be an average.

My 1200 (x2) averaged 62 mpg My 1250 averages 58. Hmm! Always used the poncy Shell V plus. (Tried the diesel version once, don’t recommend that)

Zitat von Sanemancured im Beitrag #1

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I've just spent the past few days in company with 3 1250 GS Adventure bikes around Scotland. I note that the 1250 model boasts better fuel consumption in the BMW blurb. I was getting a little less than 10% greater fuel consumption than the GSA's.

I wonder what those who've had both in RS form find?

Did I have trouble keeping up? Of course not.....

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Zitat von Lee im Beitrag #3

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Zitat von backRoadS im Beitrag #2

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. I stumbled on to this when I got gas at station with only 87 or 93, so I bumped up from required 89. )

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The R1200RS recommended 89 AKI but the R1250RS recommends 90 AKI.
I have no idea if the R1250RS needs one more AKI or if the Germans rounded up instead of down when doing the octane calculation.

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I've had both '18 R1200GSA and '19 R1250GSA. I don't measure, nor worry about fuel mileage. If there's a difference it's nominal.

My '19 GSA holds 8 gallons, my wife's '20 GS holds 5.7 gallons. I fill up when she needs fuel.

I don’t measure fuel consumption either. But when I’m spending £20 to their £22 to fill up I notice.

Zitat von Sanemancured im Beitrag #1

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I've just spent the past few days in company with 3 1250 GS Adventure bikes around Scotland. I note that the 1250 model boasts better fuel consumption in the BMW blurb. I was getting a little less than 10% greater fuel consumption than the GSA's.

I wonder what those who've had both in RS form find?

Did I have trouble keeping up? Of course not.....

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Looks like BMW no longer shows gas mileage figures on the USA website.

I have a 2018 R1200RS and consistently get high 50s for mileage. I guess I don't ring it out often enough.

My 2016 1200 gives best MPG when out riding behind the wife on her Triumph at 60mph

Always used shell super V for the the RS and now see UK MCN magazine tested two identical bikes where the cost of this new E10, with loss distance, compared to dearer fuel is not worth it.
So 'saving the world' by adding 10% seems to have been a great success!

Last long trip across europe (remember those days?) I got pretty good results, although 2000 miles were in Norway's 80kph/50mph speed limits may have helped

P1000579.JPG - Bild entfernt (keine Rechte)

Any idea what the gearing is on these bikes, what would be the rpm at 70 mph, compared to my Suzuki Gsxs1000 which is 4500rpm?