: Latest road trip - finally saw 25 MPG on one tankful



packardv8
04-28-13, 01:49 AM
Just returned from a 2000-mile round trip from Spokane, WA to southern Utah in a 2011 3.0 XWD. Tires were 39 PSI cold and usually 41 on the road.

When the car was new, it averaged around 20-22 on the highway. Now with 15,000 on the odometer, this trip was 23.7 MPG and one tank in areas with lower speed limits was 25. Most of the rest of the time was 75-80 MPH on cruise control through the mountains.

One fact I ascertained is using the air conditioning definitely costs at least one MPG. Naturally, on a hot day, it's worth the cost many times over. However, on this trip, the daytime temps were 50-60. On the way down, I didn't think about turning off the AC. MPG was 22.5. Today, same road with AC off, the average was 23.7.

jack vines

davedogcaddy
04-28-13, 11:46 PM
Interesting data...

I'm just amazed at how much better gas mileage I'm getting on my 2nd Gen SRX (2010 MY) compared to my last SRX (1st Gen 2005 MY). I haven't crunched the numbers yet, but I'm sure I'm going many more days/weeks without needing to fuel. That's been a pleasant surprise I wasn't expecting.

packardv8
05-07-13, 12:09 AM
A member who shall remain anonymous PM'd me and said it must be my heavy foot, as he gets much better fuel mileage.

Turns out, he has a FWD, which naturally is going to get better mileage than an XWD.

He did admit his wife will not let him pass on a two lane road or exceed the posted limit. A built in economy czar is bound to help.

jack vines

davedogcaddy
05-07-13, 08:01 AM
just completed a 1000 mile round trip mostly at speeds of 75 mph. I got an average of 25.4 mpg.

300:29:1
05-07-13, 09:00 AM
just completed a 1000 mile round trip mostly at speeds of 75 mph. I got an average of 25.4 mpg.
DId you have the A/C or heater on at all? What was your tire pressure. I assume the road was mostly level.

davedogcaddy
05-07-13, 04:10 PM
I had the HVAC system set to Auto, the A/C was running the whole trip, but it wasn't super-hot so it never ran very hard. Went from North GA to middle OH, so I saw a fair amount of mountains.

Now.... I will say this, I was flying solo on this trip and only had one small suitcase with a few days worth of clothes, my laptop, etc - so I had a mostly empty vehicle.

I was just impressed I was getting this kinda of MPG running at 75 Mph. In previous vehicles it always seemed that if you wanted to get close to the rated highway MPG you had to do about 55-60 Mph, so I am pleased.

300:29:1
05-07-13, 06:11 PM
I had the HVAC system set to Auto, the A/C was running the whole trip, but it wasn't super-hot so it never ran very hard. Went from North GA to middle OH, so I saw a fair amount of mountains.

Now.... I will say this, I was flying solo on this trip and only had one small suitcase with a few days worth of clothes, my laptop, etc - so I had a mostly empty vehicle.

I was just impressed I was getting this kinda of MPG running at 75 Mph. In previous vehicles it always seemed that if you wanted to get close to the rated highway MPG you had to do about 55-60 Mph, so I am pleased.

Thanks for the feedback.

packardv8
05-08-13, 09:57 PM
just completed a 1000 mile round trip mostly at speeds of 75 mph. I got an average of 25.4 mpg.

Anyone have any opinion of the penalty for all-wheel versus front wheel drive. My experience is at least one MPG less, maybe two MPG. davedog saw 25.4 with FWD. I got 23.7 with all-wheel under similar conditions.

jack vines

300:29:1
05-08-13, 10:15 PM
Anyone have any opinion of the penalty for all-wheel versus front wheel drive. My experience is at least one MPG less, maybe two MPG. davedog saw 25.4 with FWD. I got 23.7 with all-wheel under similar conditions.

jack vines
I hadn't noticed FWD in his sig. That will make a difference.

tmw
05-12-13, 05:07 PM
Fill up with Ethanol free gas...you'll get 25 or close to it everytime.

Cadillac Cust Svc
05-12-13, 07:13 PM
We're glad to see community members experiencing some successful road trips in their crossovers! Wishing you many more happy travels.

Sarah, Cadillac Customer Care

TheCaptain
05-14-13, 10:00 PM
New 2013 SRX AWD. 1200kms since new.
Recent road trip to the coast and back over the Rockies:
Total Trip: 4240 kms (2635 miles)
Average Economy: 12L/100km (19.7 US MPG)
Average Speed: 81.7 kph (50 Mph)

Maintaining a healthy 136 kph (84.5 mph) [with an 80 km/h headwind both ways!!) highway speed on the flats and 121-130 kph in the mountains (too many RVs, semis and poor drivers to go faster). Also, my Adaptive Cruise won't work on even numbered kms. Anybody else with this issue? I only get about 20 mins out of it before "Adaptive Cruise is Temporarily Unavailable" for two minutes before being able to reactivate.

packardv8
05-20-13, 08:20 PM
Latest road trip to/from Missoula, MT. 2011 3.0 XWD - Steady 75 MPH most times and 22.7 MPG.

Maybe it's just mine, but the cruise control drops a couple of MPH before it opens the throttle. I've had several cars recently which seem to maintain exactly the speed setting.

jack vines

davedogcaddy
05-20-13, 10:50 PM
Jack, I noticed the same thing. My old SRX (2005) would hold the set speed at all costs (RPM & otherwise), and on the new one it seems to be 'smarter' about how it maintains the set speed. This sometimes results in being a couple MPH below the set speed for a bit, but it also gets MUCH better MPG than my previous SRX.

300:29:1
05-21-13, 04:34 PM
I have noticed that when resuming cruise, if the actual speed is even 1 mph below the set speed and you press resume, there is a jerk and excessive rev. If you get speed above the set point, it's a smooth transition from foot on the pedal to cruise. Very annoying.

GEORGEC
05-22-13, 04:49 PM
Just returned from a 2000-mile round trip from Spokane, WA to southern Utah in a 2011 3.0 XWD. Tires were 39 PSI cold and usually 41 on the road.

When the car was new, it averaged around 20-22 on the highway. Now with 15,000 on the odometer, this trip was 23.7 MPG and one tank in areas with lower speed limits was 25. Most of the rest of the time was 75-80 MPH on cruise control through the mountains.

One fact I ascertained is using the air conditioning definitely costs at least one MPG. Naturally, on a hot day, it's worth the cost many times over. However, on this trip, the daytime temps were 50-60. On the way down, I didn't think about turning off the AC. MPG was 22.5. Today, same road with AC off, the average was 23.7.

jack vines


One tankful does not tell you any accurate information regarding fuel economy. You need to manually calculate over at least three tanks full. There is just too much variation in the "fill up" point on only one tank.

I record the odometer reading on every gas purchase receipt. That way I can calculate accurate fuel economy numbers.

George

Likely
05-22-13, 05:36 PM
packardv8.....

Must have been rolling down hill alot!!!!!!

westham
08-13-13, 05:01 PM
Drove to Santa Barbara from Los Angeles last Sunday and with a steady 65-70 mph got 25.5 mpg, on the way home it was stop and go and slow on the freeway and the MPG on the screen went down to 22.1 Front wheel drive two adults onboard with the AC blowing all of the way there and back.
It's in the city I only get around 15-16 if I'm lucky.

300:29:1
08-13-13, 05:16 PM
Drove to Santa Barbara from Los Angeles last Sunday and with a steady 65-70 mph got 25.5 mpg, on the way home it was stop and go and slow on the freeway and the MPG on the screen went down to 22.1 Front wheel drive two adults onboard with the AC blowing all of the way there and back.
It's in the city I only get around 15-16 if I'm lucky.

Most can't drive that "slow" Speed does make a difference in MPG That 15-16 seems too low to me

mjf
08-13-13, 11:16 PM
It is nice to see someone getting decent gas mileage. So far mine is TERRIBLE my best average for combined is 15.2. Usually it has been in the 14.1-14.4 range. I have been hoping to see the gas mileage increase but am VERY doubtful that it will. Granted- the car is only a month old with 850 miles on it, but I was hoping for better mpg than a large suv.

MJDART
08-14-13, 11:27 AM
Interesting information from each of the posts, my '13 3.6L FWD with 500 miles and obviously a tight engine is averaging 22.4 going back & forth to work 60 mile round trip mostly expressway (50 of the 60 miles) with mostly cruise on set to 68 mornings & 70 afternoon. My '06 CTS 3.6L 18" wheels 50 series tires, averaged 22.9 to 23.6 for over 100,000 miles, so I can acutally see the SRX matching or exceeding my CTS's MPG averages. The CTS acutally used to be better before the 10% ethanol addition to gasoline started. On the instantaneous readout I would see 27 mpg on level expressway steady speed of 70, after the ethanol it dropped to 26 mpg on the same stretch of road.

Does the SRX have "instantaneous MPG on the DIC? I haven't come across it yet.

Cadillac Cust Svc
08-14-13, 03:51 PM
Interesting information from each of the posts, my '13 3.6L FWD with 500 miles and obviously a tight engine is averaging 22.4 going back & forth to work 60 mile round trip mostly expressway (50 of the 60 miles) with mostly cruise on set to 68 mornings & 70 afternoon. My '06 CTS 3.6L 18" wheels 50 series tires, averaged 22.9 to 23.6 for over 100,000 miles, so I can acutally see the SRX matching or exceeding my CTS's MPG averages. The CTS acutally used to be better before the 10% ethanol addition to gasoline started. On the instantaneous readout I would see 27 mpg on level expressway steady speed of 70, after the ethanol it dropped to 26 mpg on the same stretch of road.

Does the SRX have "instantaneous MPG on the DIC? I haven't come across it yet.

Hello MJDART,

Thank you for posting your MPG experience. I hope your SRX continues to match or exceed your previous MPG averages on your CTS also. There is an instantaneous fuel economy on your SRX. This can be found on page 5-28 of your owners manual. If you have additional questions or concerns, don't hesitate to reach out to us!

Sincerely,

Laura M.
Cadillac Customer Care

TheCaptain
08-15-13, 08:21 AM
MJDart, the '13+ SRX does have instantaneous reading, you just need to go into your DIC options and turn that page on. It's off default from the factory.

packardv8
12-02-13, 03:21 PM
Made another heavily loaded 1500-mile round trip Spokane/Salt Lake. This is through the mountains first half and rolling plains second half. The average speed readout for the entire 1500 was 73 MPH, so mostly 75-81 MPH cruise control running.

The average MPG off the computer readout was 21.5. The Goodyear snow tires seem to knock about .5 off the average of the Michelins.

jack vines

stevec5375
12-02-13, 05:49 PM
99.9% of my driving is in town. I have never seen the average MPG exceed 17.

300:29:1
12-02-13, 09:40 PM
I can get close to 25, although I must keep my speed under 70 and closer to 65MPH. Anything more and it's 24 or less. I do gave AWD.

westham
12-03-13, 10:22 AM
Los Angeles to Las Vegas and back over Thanksgiving returned a 23.7 MPG at an average speed of 67.5 MPH so I'm pleased with that. :-)

packardv8
12-03-13, 12:09 PM
99.9% of my driving is in town. I have never seen the average MPG exceed 17.

This next week the temperature here will be down in the single digits. With cold starts for short in-town trips, so will the MPG. This 3.0 XWD will be around 12-14 MPG. That's by far the lowest of any modern car we've owned. But then, it's by far the heaviest, widest tires and all-wheel-drive.

jack vines

b4z
01-11-14, 07:21 PM
I'm glad to see the gen 2 has the ability to do 25 mpg on the hwy. I may be leasing my 4 th SRX soon.