2013 XC60 R Gas mileage drop

sleep R · Post by **sleep R** » 20 Dec 2013, 15:58

I have a 2013 R design xc60 with 41,000 miles. once I reached 35,000 miles my gas mileage went from 23-24 mpg to 18.5 mpg. No matter how conservatively I drive it wont go above 18.5. Any idea on what it might be?

Post by **matthew1** » 20 Dec 2013, 18:56

No light or message center display? I would guess front oxygen sensor, but without a message it's not certain. Also, the mileage is low for this to fail.

Post by **matthew1** » 20 Dec 2013, 18:57

I'd take it in. It's under warranty. See what the dealer says.

sleep R · Post by **sleep R** » 20 Dec 2013, 19:43

I just took it in to Volvo and they said they couldn't find why the gas mileage dropped

Gravy68 · Post by **Gravy68** » 26 Dec 2013, 19:02

Mate

Are you absolutely certain you are using the same grade of fuel. Here in Aus the difference in using 95 rated octane to 98 is very noticeable in fuel consumption and performance.

Post by **matthew1** » 26 Dec 2013, 19:29

Good thinking ^

Here too. There is a measurable difference between low and high grade with my '97 850.

Post by **jimmy57** » 26 Dec 2013, 19:59

What, if anything, has been done to find this problem?
Lots of things that do not cause codes to set can make MPG poor.
Do you know it is going into 6th gear above 45 (+/-) on level ground light throttle?
Has air filter been checked?
Were tires replaced at 35K miles?

Post by **oragex** » 07 Jan 2014, 16:03

Can you go to a different Volvo dealer? Not finding the issue it's not an acceptable answer.

I guess the DIM shows the gas mileage, so the dealer must solve the issue. Without a doubt, there is a failed sensor.

You can check on https://local.google.com/ for New Jersey Volvo, see who's better rated. I've read more than once on forums about how crappy are Volvo dealers in your area.

ChiNorm · Post by **ChiNorm** » 08 Jan 2014, 13:14

R U in the US? Do you get winter gas? If so, this is the source of the drop in MPG. I know that the mileage on my 13 S60T5 tanked when the gas got switched.