I've owned a 2009 Supercharged XF and now a 2012 Supercharged XF and have never been able to get my mpg above 12-13. Granted most of my driving is in the city but does not include stop and go commuter traffic. Has anyone had better luck getting 16-18 mpg?

 

I get ~19mpg with 90% highway. Around town is usually in the 15mpg range and I do get on it now and then.

 

I have been averaging 19.4. I don't drive very easy either.

 

Are you using D or S routinely? Using S will increase fuel consumption noticably as will using the paddle shift.

 

Lowest average I have gotten in the last 10 days (since I got the car ) is 19.7 on a tankful..... and I have been showing off the car, if you know what I mean. We just took a 350 mile trip (each way) and got 21.8 going and 22.7 back...including showing off the car when we got there

 

Mine's a 5.0L N/A. My overall average is about 17mpg. I'll get 8mpg popping out for a "quick" lunch, and I can get 26-27mpg cruising on the highway with an average of about 70mph. The cruising performance is much better than both of my Hondas.

 

In the 2009 XF's 4.2L Base Engine, I've been getting 21-23MPG in everyday driving...I'm not the easiest on the foot.

When I actually TRIED for MPG, I got 28 on a recent long-distance trip.

 

Interesting - this is almost exactly what I get from my XFR. I am out west of the beltway so maybe I get less stop-start than you? Your highway mileage is a bit better than mine - I am around 23-24 on a rare long journey.

 

I always drive in D and very rarely S and never use the paddle shifters. I'll try it. It must be my driving habits because I would be embarrassed to admit what I was getting in my Supercharged Range Rover Sport.

 

and you are using premium gas correct? cause if you don't your gas mileage will suffer as the computer changes the timng to match the poor grade fuel

 

Averaged over 22 mpg today in a 30 plus mile trip doing 65-70 mph in S. My gas mileage seems to be getting better after 3 months.

 

Just had an interesting experience......just came back from a 200 mile trip where 2/3 was flat and last 1/3 a very winding straight up stretch to 6000 feet. The average tank for going up to destination was 16 mpg. The stretch down hill was over 30 mpg but ended up for an average of 20 mpg. (I love going down hill) I believe this vehicle is performing as advertised (09 XFSC)

 

I get about 15.3mpg per my 09 XFSC's computer. I drive mostly surface streets and not particularly aggressively. Not great mileage but I guess about as advertised.

 

Yeah, I always use premium gas from either Exxon or Shell. Both cars were always properly maintained. The first XF only had 22,000 miles when the lease expired and my current XF only has 3,000 miles on it. Truth be told the engine in the first car only went on one extended road trip and the second car hasn't made it out of Dallas-Ft Worth. I have gotten the MPG up to 14.5 with the last two tanks. Perhaps I drive in more stop and go traffic than I realize.

 

2010 Premium with 13K miles. Best so far was 27.8 MPG on a 200 mile road trip. Around town is about 16. I often use Dynamic mode, sometimes sport. I don't use the paddle shifters too much but found them awesome on a mountain pass.

 

23.3 mph today on 40 mile highway trip in XF SC with no ethanol premium in dynamic (no sport).

 

Pretty impressive. Last weekend, we had a 160 mile round trip, mostly highway. I got 26.2 MPG driving around 72 MPH on the highway. The key to high MPG is driving very smoothly and accelerating gingerly.

 

BMW proved years ago that gingerly is incorrect. The best fuel efficiency is achieved by wider throttle openings to get up to the desired speed quickly and then ease back to cruise.

Smooth is important.

Basically, best fuel economy is achieved by using the brakes as little as possible. Acceleration rate does not affect fuel economy nearly as much as some people suggest.

Smooth application and release of both brakes and throttle, as well as smooth cornering with minimal tire scrubbing all reduce fuel consumption. But basically it takes x amount of fuel to increase a vehicle's speed and the rate at which you do so makes very little difference.

 

According to the trip computer I just got 28 mpg - avg speed of 64 mph on a 150 mile trip - from Roscoe NY - to Babylon. I was pleasantly surprised. Best MPG I've gotten to date.

 

Darlo,

Actually, my commute is from Katy to Eldridge, usually through Westheimer Parkway.