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I own a 2013 rav4. I bought my car new in Maryland in 2013 and it got the expected gas mileage until I moved to Europe and had the car shipped over on a boat. I regularly got ~27mpg and 350+ miles per tank of gas.

Now in Europe I get ~19mpg and about 250 miles per tank of gas.

I think I am getting 95 octane gas here in Europe. I realize the scale is different. I wanted to see if I could buy premium gas here (97 octane?) to see if it would improve my MPG but I have not been able to locate any premium gas.

Any ideas?
 

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miles or kilometers? Gallons or liters? Something might be lost in the translation. A 10 mpg drop makes no sense.

Also you must change your location since it is no longer MD and the US.
 

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I own a 2013 rav4. I bought my car new in Maryland in 2013 and it got the expected gas mileage until I moved to Europe and had the car shipped over on a boat. I regularly got ~27mpg and 350+ miles per tank of gas.

Now in Europe I get ~19mpg and about 250 miles per tank of gas.

I think I am getting 95 octane gas here in Europe. I realize the scale is different. I wanted to see if I could buy premium gas here (97 octane?) to see if it would improve my MPG but I have not been able to locate any premium gas.

Any ideas?
In most of Europe fuel labelled 95 RON is the equivalent of around 89 (R+M)/2 fuel available in N. America. Buying premium gas in Europe would be a waste of money and would in fact achieve (slightly) fewer MPG because it actually contains less energy per gallon than lower octane fuel.

How are the temperatures in the part of Europe where you are? Lower temperatures than you are used to are the most likely cause, also are you on average travelling shorter distances?
 

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Where are you in Europe? When I lived in the U.K. some years ago the petrol pumps were switched from dispensing gas in imperial gallons to dispensing it in liters. If converting liters to U.S. gallons a liter is actually about 33 ounces, so if using an extrapolated conversion of 4 liters = 1 quart and so 4 liters make up a U.S. gallon (128 ounces) 4 liters actually are about 132 ounces, so there may be some confusion there.

But the drop in mileage which you are experiencing is much more than one would expect. As was suggested in a previous post, are you driving for much shorter distances than when in the U.S.? Especially if in a city, is there more traffic congestion than you normally experienced in the U.S.? Having driven also in Europe premium fuel was universally available, but using it as noted in a previous post would be a waste and might even reduce mileage further as well as being more expensive. When I lived there people who imported cars from the U.S. took them to specialists who did some reworking in addition to the usual lighting, etc. revisions to adapt them to Europe. I don't know what that work involved, but it might be worthwhile consulting a specialist, especially given the much higher price for fuel there.
 
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