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Hi friends!

My wife and I are getting rid of our XC90 V8 and most likely trading it for an XC70. I've been looking at some nice low mileage 2010-2011s in my area and they seem very reasonably priced (depreciation appreciation!). While not being the main reason we're switching to something a bit smaller, it would be nice to get something a bit easier on gas. We live in a rural area and we each drive around 25k miles/year so we do spend a lot of money on gas. Our current V8 gets around 19mpg (real world, mixed driving). I did some research and its hard to find any good sources for the XC70 3.2 vs T6.

Both my wife and I would prefer a T6 but it does depends a little bit on the fuel economy (has to be better than out XC90 V8).

- What should I expect to see for real world fuel mileage from the 3.2 and the T6?
- If driven with a light foot (60 mph) what does the T6 get on the highway?

Thanks!!
 

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I have a a 2012 T6 with P* tune which rates slightly different than a 2011 or earlier, and mine is fairly heavily modified, but even with everything done we consistently average about 22 on mixed driving and the trip computer records 27+ some cruising on the highway.

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08 XC70 3.2 AWD, 137k.
City 20-21mpg.
Highway (60-70mph) 27mpg.
No mods, just solid stock car.


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Our 2010 XC90 with the 3.2 never gets above maybe 21mpg pure highway. The T6 in our XC70 even with the Polestar tune gets up to say 25, maybe 26mpg highway. I wouldn't expect radically different mileage between the 3.2 and T6 under steady state highway driving because there isn't enough load to engage the turbo so both engines should be similar in economy.
 

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2004 S60R 6M - 2006 V70R 6M - 2014 XC60 R-Design OSD - 2015.5 XC70 T6 Platinum
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My T6, in mostly short trips during the winter has been getting about 17-18. Summer and highway are much better.
Same here. Winter wheels and fuel, we get ~18 mpg. Summer wheels, fuel and highway 22 - 24 mpg.

Once on the I-80 (with a massive tail wind!) we got 27mpg! :)
 

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2013 T6: When I drove from Salt Lake City --> San Fran, I got 27 mpg. For local driving, it's 21.5.

This is a ULEV-II (ultra-low emissions vehicle) - about 1/2 as much CO2 pollution as other cars with same gas mileage.

And 300 h.p. 0-60 in 6.8 secs. Very peppy. Very smooth engine. The I-6 is the most well-balanced engine built (vibration extremely low).

We love the way this car drives -- lower center-of-gravity than an SUV.
 

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....

- What should I expect to see for real world fuel mileage from the 3.2 and the T6?
- If driven with a light foot (60 mph) what does the T6 get on the highway?

Thanks!!
My 2010 XC70 T6 is stock except for a K&N air filter. I currently have all-weather Continental tires. I get just over 21 mpg with driving that's probably 70% highway, 30% city. I've never driven a 3.2, but IMHO the superior performance of the T6 would make it a good choice. P3 XC70 T6s with low mileage are a bit hard to find around here (bay area California). These are sought-after cars. I got a good deal last July on by 2010 with 100k miles.
 

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My 2011 XC70 T6 is stock with 145k miles on her with me putting on only the last 20k. I use premium fuel as I found the economy drops off about a mpg or so with 87 octane. Also, and I can't prove this, but when I ran a few tanks of 87 octane through it over the winter, I got an emissions code related to the catalytic converter that I think was due to the winter blend 87 octane. So I switched back to 93 octane all the time.

My regular trip to work is about 7 miles of rural stop and go, then 25 miles of limited access 2 lane - 70 mph steady. I usually see 24-25 mpg in the summer on the Eagle F1s that came on the car. In the winter that drops to 20 or so on the Blizzaks is run for 3 months in the winter. This is all using the trip computer on the dash. I park in the garage, and I don't usually idle the engine for more than a minute to warm it up.

In previous cars I was anal about calculating the MPG using the gallons I put in and the miles on the trip odometer, but anymore I just look at the nice little computer that Volvo has provided me.
 

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So glad I have the XC70 D5! I average around 33.5 MPG US, a bit better on a long trip, a little less around town.
 

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Our 2013 T6 gets an avg. 21.5 mpg in suburban commuting. On the highway, it's 27 mpg.

I'm not so sure you're giving up any space going from XC90 --> XC70. The XC70 cargo space is more a rectangular solid with seats folded down.

One reason the gas mileage is better on XC70 is the car height is about 3" sleeker. The T6 is a fantastic engine...totally smooth, and very peppy.
That said, the first 2 years of production of the T6 engine (2009-10), it was missing an oil pressure sensor.
 

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Our 2012 T6 (6 cylinder turbo) - Around town/back roads - With no regard to saving gas, 16-17 - with a lighter foot - 22
Hwy - 75 mph - 26-27 64 mph - 31

Our 2016 T5 (5 cylinder turbo) - Around town/back roads - With no regard to saving gas, 19-21 - with a lighter foot - 23-24
Hwy - 75 mph - 27-28 64 mph - 34
 
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