Curious- what's your mpg?
Predominant city driving. Abysmal 12mpg. Thought it'd be closer to 15
Predominant city driving. Abysmal 12mpg. Thought it'd be closer to 15
P530 what's your mpg?
1 reading
Triathlonkid
21 - 40 of 58 Posts
I get between 26 - 29 mpg on the highway at average speeds of 65-75 mpg (29 mpg at 65). I’ve done 3 long distance trips so I have a fair amount of data. This is with a fully discharged battery because I don’t get to charge during trips.
City driving is almost entirely in EV mode.
City driving is almost entirely in EV mode.
I went and pulled out my driving data from InControl, and filtered for long trips and removed anything that started from home. This is the chart: essentially P400 MPG for highway driving.
Y Axis: average speed in MPH.
X Avis: average MPG.
Label on each dot: Duration of trip.
Enjoy.
![Image]()
Y Axis: average speed in MPH.
X Avis: average MPG.
Label on each dot: Duration of trip.
Enjoy.
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1,830 Posts
This is a great chart! Thank you for sharing
Whenever I go fast. 80-95 mph, my mpg drops to about 20-20.5 mpg, but when I'm driving slower, 45-75, I'm doing 21-22 mpg.
I track every fill-up with 'Fuelly'.
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321 Posts
Interesting! your car is same as mine (P400 SWB). I think the difference is Fuelly is more accurate. From my experience, the onboard computer of the car exaggerates mpg by 2-3 mpgs. What is your wheel size? Mine is 22"
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80 Posts
This is the ironic part about getting a V8 in the RR. You can get from A->B faster, but you'll have to spend more time filling up and more time & money getting it serviced (e.g. 2 more spark plugs).
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321 Posts
I am not sure about getting A to B faster is an advantage of V8. Its not like the other powertrain cannot go fast lol I personally not gonna go back to V8 just because how frequently you have to visit the gas station if you drive mostly at speeds below 20-30 mph (i.e. heavy urban driving).
Pull the mpg data from the Incontrol log, it should be more accurate than any other method.
Just finished a 250 mile loop through and around Glacier Ntl Park. 27.1 mpg, 47 mph.
70 on the highway going East around the park, 35- 40 mph coming back over Going to the Sun Rd.
70 on the highway going East around the park, 35- 40 mph coming back over Going to the Sun Rd.
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1,830 Posts
really wondering why my MPG is so low..
Are you driving in sport mode?
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nope.
I used to get about 2mpg more before the AT tires. (I went back and looked)
I have the HVAC on set to cool to 68 usually (minus heat waves, ambient temp is usually mid 60s to mid 70s). I'm not aggressive on the gas. I have the music on (but not blasting) with the high end system, which I'm sure uses some power. I do have the heavier seats in the back and the full size spare and the tailgate suite.
I'm really wondering why my MPG is so much lower than what everyone else seems to be getting.
I don’t think the AC Music etc would have any measurable effect on mpg. I’m in Texas myself, mostly the AC is on, rarely heat. I have the heavier seats, full size spare etc as well.
The tires for sure have an effect. Did you update to heavier rims?
The tires for sure have an effect. Did you update to heavier rims?
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1,830 Posts
I've got '22 rims, that's what it came with. the tires are definitely impacting the MPG, but also, it wasn't that great to begin with. weird. I'm encouraged by what you all are getting, wish there was a way to get my MPG up a little too.
I have the factory 22s as well. Any mods to the car that affects the aerodynamics?
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1,830 Posts
So we’re on the same rims. Nope. All stock. No mods.
I’d say there’s lot of hills and what not here, but by that token, the down hill freeway should do better than 14 mpg. Maybe there’s something wrong with my car. Maybe some module needs an update
Your mpg is really in line with what I’d expect for a SUV with non-hybrid V8 engine. Could it be that the mild hybrid functionality is compromised? This would be a soft failure, and a drop in mpg would be the only indicator.
Fuelly is hand calculated and it's much more accurate. I record absolutely all fill-ups. My all-time avg is technically 19.9.
Oh also I have the 23" Wheels.
Since you have detailed hand recorded data, could you spot check one of your fillups as recorded by Fuelie vs what Incontrol shows? I’m assuming InControl is accurate but who knows??
I'm sorry but how does one pull data from InControl?
21 - 40 of 58 Posts
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