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I am happy with this economy because I have done a lot of town driving on this tank and it includes two very high speed motorway journeys totally more than 160 miles (258 km) when my average speed was 79 mph.(127 kph) Average 79!, they are great figures, for an average like that Something else that interests me is how the ECU calculates the predicted range. My previous car behaved in the same way - perhaps your's does.After refuelling, the predicted range to empty now shows only 505 miles even though the car did 652 miles on the previous tank.It does not seem to be very logical to me.Sounds like HY have set a conservative constant in the ECU for this purpose, which is the base figure for calculations & subsequently overwritten by actual performance.Oh - I haven't finished yet. Another minor mystery is the accuracy of the fuel gauge. It is a digital display made up of 12 bars.It showed 12 bars (full) until I had done 206 miles- hence I had used up 32% of the fuel before it moved off empty.until 343 miles - 10 bars (83%) compared with (47% of actual range left)until 376 miles - 8 bars (66%) compared with (42% of actual range left)until 414 miles - 7 bars (58%) compared with (37% of actual range left) until 456 miles - 6 bars (50%) compared with (30% of actual range left)until 534 miles - 5 bars (42%) compared with (18% of actual range left)until 576 miles - 3 bars (25%) compared with (12% of actual range left)until 634 miles - 2 bars (17%) compared with (3% of actual range left)until refuelling - 1 bar (8%) No wonder the predicted range to empty is a lottery when the fuel gauge is so inaccurate.The float probably travels in an arc and is mounted low in the tank. When full, a fair amount of fuel can be used with little float movement. I wish they were mounted on a vertical shaft, so the result would be linear.
it includes two very high speed motorway journeys totally more than 160 miles (258 km) when my average speed was 79 mph.(127 kph)
Quote from: AlanHo on May 18, 2012, 17:22:10it includes two very high speed motorway journeys totally more than 160 miles (258 km) when my average speed was 79 mph.(127 kph) As an aside, what penalties would apply here if the police pulled you over?
At one point I decided to check the top speed of the new car but reached only 110 mph (177 kph) - the spec is 117 mph.
I've had in excess of 60 litres in my 53 litre tank on numerous occasions.