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antichrysler · 06-08-2007, 02:56 PM

The difference is the 23/31 is MPG (using US gallons). The 29/39 that you're talking about is Imperial Gallons (British gallons).

British Gallons are about 0.5L bigger than US gallons, so about 20% ish.

06-08-2007, 02:56 PM	#40
antichrysler GLS member Join Date: Feb 2007 Location: Regina, SK Posts: 1,215	The difference is the 23/31 is MPG (using US gallons). The 29/39 that you're talking about is Imperial Gallons (British gallons). British Gallons are about 0.5L bigger than US gallons, so about 20% ish.