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Volvo XC90 Real World MPG

74 messages,  Last post on Jun 26, 2009 at 7:59 PM

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#66 of 74 Re: Fuel use 2007 XC90 3.2 FWD [jim314] by jim314 Jul 07, 2008 (1:30 pm)
Replying to: jim314 (Jun 26, 2008 7:31 am) 16.0 mpg (computer 17.4 mpg) 7-5-2008 with Shell 89+91 octane => 91 octane, mostly short trips in city 22.8 mpg (computer 23.9 mpg) 7-6-08 with Shell 93, highway 26.5 mpg (computer 28.4 mpg) 7-7-2008 with Shell 93, 330.9 mile leg of 659 mi road on trip, uncrowded state highways, rolling hills at 45 mph to 55 mph to 60 mph (a/c off, 3 windows open for old dog who likes to look out the window), and some interstate mostly at 60-65 mph, windows closed a/c on.    Overall on two-day, two-night camping trip: 659 mi / 26.89 gal = 24.5 mpg.    Overall fuel use to date since purchase: 12,853 mi / 670.6 gal = 19.2 mpg.   The last result suggests that the mpg of the XC90 3.2 will increase strongly with lowering of the speed. Steady driving on interstate highways (but not extreme hypermiling) at 60 mph, with nothing on roof might give ~26 - 27 mpg. Replies to this message: jim314 (Jul 29, 2008 11:32 am)
#67 of 74 Re: Fuel use 2007 XC90 3.2 FWD [jim314] by jim314 Jul 29, 2008 (11:32 am)
Replying to: jim314 (Jul 07, 2008 1:30 pm) 13.5 mpg (computer 14.2 mpg) 7-17-2008 with Shell 93 AKI, all very short trips 76.1mi/5.656 gal    Begin 2631 mile road trip (10.3 mi on tank) Dallas TX to Wisconsin to Indiana to Dallas, 2631 mi / 107.2 gal = 24.5 mpg, 60 to 65 to 70 mph, two people and 3 dogs with camping gear, nothing on roof, most driving by me (attentive to fuel economy but no hypermiler), some by my wife (much less atttention to fuel economy, keeps 8 second interval between her vehicle and the next one ahead), some by brother (low attention to fuel economy).   24.5 mpg (computer 26.0 mpg, 46 mph) 7-19-2008 with Shell 93, highway, park roads 26.2 mpg (computer 27.6 mpg, 51 mph) 7-20-2008 with Shell 91, 404 mi highway 25.5 mpg (computer 26.6 mpg, 54 mph) 7-22-2008 with generic 93, 451 mi highway, touring urban 23.6 mpg (computer 24.3 mpg, 31 mph) 7-25-2008 with generic 93, urban touring 23.4 mpg (computer 24.3 mpg, 35 mph) 7-26-2008 with generic 93, highway and Chicago traffic jams 24.9 mpg (computer 26.5 mpg, 47 mph) 7-27-2008) with 92 AKI, highway, touring 24.1 mpg (computer 25.6 mpg, 42 mph) 7-28-2008) with Shell 93, highway, touring   Ave mpg to date since purchase 15570 mi / 783.5 gal = 19.9 mpg
#68 of 74 Another article on octane: requirement vs. recommendation by jim314 Aug 02, 2008 (4:33 am)
http://www.nytimes.com/2008/08/03/automobiles/03OCTANE.html   I will still use a minimum of 91 octane AKI in our non-turbo Volvos. Suppose the knock sensor fails? The slight savings in fuel costs are not worth it to me. Of course if I would stop at a station in the boonies I would not hesitate to use 87 to get me where I needed to go.   89 octane might be the best fuel for a driver (like me) who doesn't push the vehicle to anywhere near its upper power levels. This would provide a safety factor against the fuel being below 87 octane, and save some money. I'm going to think about it.   Lately I have been using 93, which bugs me. My area stocks 87, 89, and 93, and I used to deliver equal vols of 89 and 93 to get 91. But recently I have had problems with the fuel pumps not allowing me to dispense two different fuels in quick succession on my credit card.
#69 of 74 Full fuel use results since purchase for XC90 3.2 FWD by jim314 Aug 07, 2008 (7:14 am)
2007 Fuel consumption records (gas pump) for 2007 Volvo XC90 3.2 FWD, purchased April, 2007.   Note: Mpg values of 16 mpg and below were for the entire tank consumed on very short urban trips. The higher mpg for 2008 could be real improvement after breakin, but is more likely due to a smaller proportion of very short urban trips and changes in driving practices in an attempt to get the best possible fuel economy. Unless otherwise stated the fuel is generally premium, 91 or 93 octane AKI. Tires are 235/65-17 Michelin 4x4 Synchrone (max infl pressure 51 psi) inflated to 40 psi. Driving style is careful, but no drafting on semis or other "hypermiling" techniques except keeping speed as constant as possible and generally not exceeding 70 mph.   17.8 mpg 5-02-2007 13.0 mpg 5-22-2007 17.8 mpg 5-28-2007   Road trip: Dallas to Gulfport MS and return 22.8 mpg 5-30-2008 on road trip with 91 octane AKI from previous fillup 21.6 mpg 6-02-2007 on road trip with 93 octane from prev fillup 22.7 mpg 6-04-2007 on road trip 23.8 mpg 6-05-2008 on road trip 25.7 mpg 6-05-2007 after last leg of road trip, all interstate hwy, odometer 2322 mi; Ave mpg for road trip: 1550 mi / 66.75 gal = 23.2 mpg.   18.7 mpg 6-14-2007   15.2 mpg 7-03-2007 16.0 mpg 7-16-2007 16.1 mpg 7-25-2007   16.9 mpg 8-10-2007 14.9 mpg 8-24-2007   16.6 mpg 9-12-2007   12.9 mpg 10-02-2007 21.4 mpg 10-08-2007 20.1 mpg 10-20-2007 19.9 mpg 10-24-2007   14.9 mpg 11-10-2007 20.7 mpg 11-16-2007 19.7 mpg 11-28-2007   21.8 mpg 12-03-2007 19.8 mpg 12-11-2007 18.9 mpg (computer 19.3 mpg) 12-22-2007 20.5 mpg (computer 21.4 mpg) 12-23-2007 22.6 mpg (computer 22.8 mpg) 12-30-2007   (Overall mpg since purchase: 7251 mi / 385.2 gal = 18.8 mpg. First oil change 12-28-2007, to Mobile1 0W-40 "European Car Formula", but no definite evidence that this improved highway mpg. But this oil may reduce wear during warmup, and may slightly improve mpg during the warmup periods of short urban trips.)         2008 Fuel consumption records (gas pump results) for 2007 Volvo XC90 3.2 Front wheel drive, purchased April 2007.   20.7 mpg (computer 21.4 mpg) 1-8-2008 with Shell 93 octane AKI 19.5 mpg (comp 20.3 mpg) 1-27-2008 with Shell 93 octane 17.8 mpg (comp 18.0 mpg) 2-17-08 with Shell 93 octane 15.5 mpg (comp 16.2 mpg) 3-7-08 with Shell 93 octane 17.3 mpg (comp 18.0 mpg) 3-23-08 with Shell 89 + 93 => 91 octane 16.6 mpg (comp 17.5 mpg) 4-10-08 with Shell 89 + 93 => 91 octane 19.4 mpg (comp 20.5 mpg) 4-18-08 with Shell 89 + 93 => 91 octane 19.1 mpg (comp 19.8 mpg) 4-29-08 with Shell 89 + 93 => 91 octane 20.2 mpg (computer 20.8 mpg) 5-10-2008 with Shell 89+93 => 91 octane 21.4 mpg (computer 22.4 mpg) 5-13-2009 with Shell 89+93 19.5 mpg (computer 20.9 mpg) 5-23-2008 with Shell 89+93 => 91 octane 15.0 mpg (computer 16.0 mpg) 6-14-2008 with Shell 93, all urban short trips 23.5 mpg (computer 24.9 mpg) 6-16-2008 with Chevron 93, includes 361 mi road trip much of which was urban, some at slow speed in state park    Overall fuel economy to date since purchase 11,244 mi / 597.1 gal = 18.8 mpg.   19.0 mpg (computer 20.7 mpg) 6-22-2008 with Shell 93 octane 21.8 mpg (computer 23.4 mpg) 6-23-2008 with Shell 91, highway 24.2 mpg (computer 25.5 mpg) 6-23-2008 with Shell 91, last leg of 609 mi road trip, non interstate four and two lane highways, and some at slow speed in state parks    Overall on two day road trip: 608.7 mi / 26.3 gal = 23.1 mpg. Overall fuel use to date since purchase: 11,991 mi / 630.9 gal = 19.0 mpg.   16.0 mpg (computer 17.4 mpg) 7-5-2008 with Shell 89+91 octane => 91 octane, mostly short trips in city 22.8 mpg (computer 23.9 mpg) 7-6-08 with Shell 93, highway 26.5 mpg (computer 28.4 mpg) 7-7-2008 with Shell 93, 330.9 mile leg of 659 mi road on trip, uncrowded state highways, rolling hills at 45 mph to 55 mph to 60 mph (a/c off, 3 windows open for a dog who likes to look out the window), and some interstate mostly at 60-65 mph, windows closed a/c on. Overall on two-day, two-night camping trip: 659 mi / 26.89 gal = 24.5 mpg. Overall fuel use to date since purchase: 12,853 mi / 670.6 gal = 19.2 mpg.   13.5 mpg (computer 14.2 mpg) 7-17-2008 with Shell 93 AKI, all very short trips in town only 76.1mi / 5.656 gal       Begin 2631 mile road trip Dallas to Milwaukee to Indiana to Dallas. 24.5 mpg (computer 26.0 mpg, 46 mph) 7-19-2008 with Shell 93, highway, park roads 26.2 mpg (computer 27.6 mpg, 51 mph) 7-20-2008 with Shell 91, 404 mi highway 25.5 mpg (computer 26.6 mpg, 54 mph) 7-22-2008 with generic 93, 451 mi highway, touring urban 23.6 mpg (computer 24.3 mpg, 31 mph) 7-25-2008 with generic 93, urban touring 23.4 mpg (computer 24.3 mpg, 35 mph) 7-26-2008 with generic 93, highway and Chicago traffic jams 24.9 mpg (computer 26.5 mpg, 47 mph) 7-27-2008) with 92 AKI, highway, touring 24.1 mpg (computer 25.6 mpg, 42 mph) 7-28-2008) with Shell 93, highway, touring    Average mpg on trip 2631 mi / 107.2 gal = 24.5 mpg, highway speeds 60 to 65 to 70 mph, two people and 3 dogs with camping gear, nothing on roof. Average mpg to date for 2008: 8319 mi / 398.3 gal = 20.9 mpg. Average mpg to date since purchase 15570 mi / 783.5 gal = 19.9 mpg. Second oil change at 15600 mi with Mobile1 0W-40 European Car Formula. The engine oil level was still at full before the change suggesting that the engine uses no oil over 8000 mi.
#70 of 74 XC90 3.2 mpg on early winter trip by jim314 Dec 15, 2008 (10:53 am)
Round trip Dallas TX to Nashville TN Dec 5 - Dec 9 with some day trips in Nashville and side trips on the way home. Tires (235-65/17) inflated to 38 psi before trip.   Total distance 1640 mi / 70.83 gal premium 93 octane => 23.2 mpg.
#71 of 74 08 XC90 V8 21.5 mpg highway by twovolvo Jan 02, 2009 (4:02 pm)
Round trip from Philly to Disney, total distance 2100 miles with 21.5 mpg on average. Replies to this message: jim314 (Jan 03, 2009 4:18 am) twovolvo (Jan 04, 2009 4:19 pm)
#72 of 74 Re: 08 XC90 V8 21.5 mpg highway [twovolvo] by jim314 Jan 03, 2009 (4:18 am)
Replying to: twovolvo (Jan 02, 2009 4:02 pm) Is this the computer value or did you calculate it from odometer readings and fuel pump volumes? Replies to this message: twovolvo (Jan 04, 2009 4:19 pm)
#73 of 74 Re: 08 XC90 V8 21.5 mpg highway [jim314] by twovolvo Jan 04, 2009 (4:19 pm)
Replying to: jim314 (Jan 03, 2009 4:18 am) This is the computer reported one.
#74 of 74 Highway trip 2007 XC90 3.2 FWD by jim314 Jun 26, 2009 (7:59 pm)
Dallas TX to Nashville TN four day round trip; 2 days on highway and 2 days locally in Nashville: 1466 miles / 59.84 gal premium = 24.5 mpgUS (9.6 L/100km).   Tires 235/65-17 Michelin 4x4 Synchrone inflated to 37 psi. About 70 mph on the interstate hwy.   Previous two tanks for all city short trips were 14.1 mpg and 16.0 mpg.

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