MPG update

wba31

knightstyle wrote: »

Anyone can drive a manual car very economically, dip the clutch downhill and when slowing down for example.

My old man is a mechanic and he told me that taking it out of gear and coasting downhill, or putting foot on the clutch and coasting downhill can ruin your clutch and/or gearbox...

That being said, I have a 54 civic 1.7 diesel, and my average MPG is 51 over the 8 months ive had it. I get around 45 around town, and 60 on the motorway. It is a manual in comparison to your automatic...

Shimrod

Chris_Hinds wrote: »

Some Automatic figures I've recorded:

BMW 330i Auto - 38mpg over 12k miles

For a petrol engine? Unless that is all motorway cruising at 55, I'm surprised you managed to get over 30mpg. Best I ever managed in a 325 manual was 34mpg on a long trip on quiet motorways and A roads

Hammyman

wba31 wrote: »

My old man is a mechanic and he told me that taking it out of gear and coasting downhill, or putting foot on the clutch and coasting downhill can ruin your clutch and/or gearbox...
.

Riding the clutch will shaft the release bearing and pressure plate but taking it out of gear and coasting down without the clutch pressed in won't do much.

knightstyle

All very interesting, as I thought the Auris is a good bet for high mpg. By the way my old Scenic 2.0 diesel gave 32.8mpg.
Hammyman, I know that dipping the clutch used to increase mpg when coasting, you were banned from doing and they even put a judge in your car on the old economy runs to make sure you didn't do this. The most economical drive entailed accelerating slowly to about 40 then slip into neutral and switch the engine off till about 15 mph, restart the engine and off you go again, but this was banned by the judges. I used to have the booklet with the rules, but this went several moves ago. Best I ever got without breaking the rules was was around 63mpg with a Hilman Imp, but got over 80mpg breaking the rules. Those were the days!

bengalknights

Currently averaging 37mpg in my is220 with 41k on the clock racked up.Think its time i got a 335D as its suppose to have the same mpg but funner to drive.

King_Nothing

Mines pretty good at the minute 25mpg, been nursing it a bit and driving like a loser, so it's up, but it'll probabley go back to 19-21 when I start giving it a good drive. Bike has got me 60 miles so far off of one bar on the petrol gauge, so should have another 250 miles out of that, which is around 300+ miles for £15 so it evens out running a thirsty car.

The_Biff

Toyota Yaris diesel 1.4 manual 53 plates gives worst 62mpg & best 64mpg. Not much of this on motorways.

smjxm09

Car trip computers often lie.

Chris_Hinds

Shimrod wrote: »

For a petrol engine? Unless that is all motorway cruising at 55, I'm surprised you managed to get over 30mpg. Best I ever managed in a 325 manual was 34mpg on a long trip on quiet motorways and A roads

All motorway driving over a relatively short period - cruising at 70mph, usually outside of any major traffic. Mind you I did miss a decimal point - it was 1.2k miles on a work trip. All figures brim-brim results not trip computer based.

Cheers

Chris

Hammyman

knightstyle wrote: »

The most economical drive entailed accelerating slowly to about 40 then slip into neutral and switch the engine off till about 15 mph, restart the engine and off you go again, but this was banned by the judges. I used to have the booklet with the rules, but this went several moves ago. Best I ever got without breaking the rules was was around 63mpg with a Hilman Imp, but got over 80mpg breaking the rules. Those were the days!

That was basically because the only way to stop fuel being drawn into the engine on a carburetted petrol engine was to turn it off, however diesels still cut off fuel on overrun. Modern fuel injection and management systems have made this redundant.

63MPG out of a Hillman Imp - I bow to your superior abilities