75 diesel fuel economy - Page 3

sylvester · 10th July 2008, 18:34

Our 2003 CDTi Tourer did about 450 miles to tankfull when new. It now returns nearer 550 miles which works out at about 48mpg. The car is just about to turn over 60,000 miles
My old 218 Turbo gradually gave more to the gallon as the miles clocked up and finally levelled out when it was up to 130,000.
Incidentally I see from the BBC website that the BMW 2.0 diesel is in the next tax bracket down from the Rover 75 as far as emmissions go - I thought this was the same engine?

Rainedrop · 11th July 2008, 21:20

My MG ZT 135Cdti has just been fitted with RoverRons Synergy2 with the pierberg MAFF, purchased because I was getting only 34MPG according to the message centre. Very impressed with the improvemnet in performance and throttle response

, on setting 6. Even more impressed with the 53.3MPG reported by message over my first 20 mile down a dual carriage way . This tailed off a bit to 40MPG over the full tank when exposed to daily work run of 20 miles round trip with 10 roundabouts and 8 sets of lights. However I did a brim to brim calculation on this and only acheived 32.25MPG

(377.4 miles on 53.2L).

A bit baffled as I had heard that the Synergy could off throw out the Message Centre but only by about 10% my first brim to brim indicated more like 20%.

I have considered switching off the tunning side of the synergy and try it just with the MAFAM enabled? Do the settings (1-10) have the same effect when the tuning aspect is switched off?

BigRuss · 11th July 2008, 22:10

On the Synergy with the tuning turned off: 1,4,7 = low mafam 2,5,8 medium mafam 3,6,9= High mafam , don't use 10.

Russ

apywell · 13th July 2008, 20:44

Quote:

Originally Posted by Matt brighton

blimey !

I get mid to low 30' mpg round town and low 40's after resetting mpg computer on a motorway run.

2.0 2001 conn se diesel - automatic ... - fluids and filters changed regularly

anything I should be looking at ? .... or is this "ok" mpg for my spec car ?

Matt - brighton

Hi Matt
the 30mpg round town is about right but mine does late 40s on motorway.

Matt brighton · 13th July 2008, 20:56

Thanks everyone for the replys

Lately.... getting low 30mpg prompted my original message - but I went from Brighton to Colchester and mid journey the computer was showing a fantastic 57 (yes 57 !) mpg amd the round trip returned 53.5 mpg - which coincided with the average speed.

I'm sure that using millers helps as last yr a run to cornwall gave better mpg than the yr before when I wasn't using it.

Anyway.... thank you all for replying to my message

Matt - B righton

Matt brighton · 13th July 2008, 21:04

thanks ken - mines looking at 90k within the nest yr - reassuring to know - i can honestly report 57 mpg on the computer during a run from brighton to colchester and an overall 53 mpg on the round trip with an ave 53 mph. (I kept as much as one can to 70 mph on the motorway)

y reg conn se auto

Regards

matt - brighton

BigRuss · 13th July 2008, 21:23

Took this one the other day even allowing for the over-read due to Synergy superb economy.

[IMG]

[/IMG]

Reset at beginning of journey it slowly increased over 30 miles on cruise at a constant speed ( motorway).

Russ

Dave Goody · 13th July 2008, 21:26

I think some people on this thread are looking at the trip computer not checking brim to brim! Either that or they are taking drugs:lol:
A car the size and weight of a 75 doing 60mpg? My brother in law has an 08 1.3 Corsa diesel that struggles to do this

Dave

BigRuss · 13th July 2008, 21:35

Last brim to brim check returned 48.2mpg but that was mainly motorway work at non peak times with little town work. Just motorway 55mpg perfectly possible.

Russ

GrahamP · 13th July 2008, 21:47

Run up to Aylesbury and back 182 miles filled to brim at start, filled to brim on return 16.5 litres = 50.31 mpg.

10th July 2008, 18:34	#21
sylvester Loves to post Rover 75 Tourer Join Date: Nov 2006 Location: Rochester Kent Posts: 256 Thanks: 18 Thanked 22 Times in 9 Posts	It gets better every day... Our 2003 CDTi Tourer did about 450 miles to tankfull when new. It now returns nearer 550 miles which works out at about 48mpg. The car is just about to turn over 60,000 miles My old 218 Turbo gradually gave more to the gallon as the miles clocked up and finally levelled out when it was up to 130,000. Incidentally I see from the BBC website that the BMW 2.0 diesel is in the next tax bracket down from the Rover 75 as far as emmissions go - I thought this was the same engine?

11th July 2008, 21:20	#22
Rainedrop Regular poster MG ZT CDTi 135 2003 Join Date: Mar 2008 Location: North Wales Posts: 33 Thanks: 0 Thanked 0 Times in 0 Posts	Computer MPG deviation My MG ZT 135Cdti has just been fitted with RoverRons Synergy2 with the pierberg MAFF, purchased because I was getting only 34MPG according to the message centre. Very impressed with the improvemnet in performance and throttle response, on setting 6. Even more impressed with the 53.3MPG reported by message over my first 20 mile down a dual carriage way . This tailed off a bit to 40MPG over the full tank when exposed to daily work run of 20 miles round trip with 10 roundabouts and 8 sets of lights. However I did a brim to brim calculation on this and only acheived 32.25MPG (377.4 miles on 53.2L). A bit baffled as I had heard that the Synergy could off throw out the Message Centre but only by about 10% my first brim to brim indicated more like 20%. I have considered switching off the tunning side of the synergy and try it just with the MAFAM enabled? Do the settings (1-10) have the same effect when the tuning aspect is switched off?

11th July 2008, 22:10	#23
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	On the Synergy with the tuning turned off: 1,4,7 = low mafam 2,5,8 medium mafam 3,6,9= High mafam , don't use 10. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

13th July 2008, 20:56	#25
Matt brighton Avid contributor Alfa Romeo 159 !! Join Date: Dec 2006 Location: Brighton Posts: 175 Thanks: 0 Thanked 0 Times in 0 Posts	Diesel mpg "faith restored" !!! Thanks everyone for the replys Lately.... getting low 30mpg prompted my original message - but I went from Brighton to Colchester and mid journey the computer was showing a fantastic 57 (yes 57 !) mpg amd the round trip returned 53.5 mpg - which coincided with the average speed. I'm sure that using millers helps as last yr a run to cornwall gave better mpg than the yr before when I wasn't using it. Anyway.... thank you all for replying to my message Matt - B righton __________________ [SIGPIC][/SIGPIC]

13th July 2008, 21:04	#26
Matt brighton Avid contributor Alfa Romeo 159 !! Join Date: Dec 2006 Location: Brighton Posts: 175 Thanks: 0 Thanked 0 Times in 0 Posts	thanks ken - mines looking at 90k within the nest yr - reassuring to know - i can honestly report 57 mpg on the computer during a run from brighton to colchester and an overall 53 mpg on the round trip with an ave 53 mph. (I kept as much as one can to 70 mph on the motorway) y reg conn se auto Regards matt - brighton __________________ [SIGPIC][/SIGPIC]

13th July 2008, 21:23	#27
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Took this one the other day even allowing for the over-read due to Synergy superb economy. [IMG][/IMG] Reset at beginning of journey it slowly increased over 30 miles on cruise at a constant speed ( motorway). Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

13th July 2008, 21:26	#28
Dave Goody This is my second home 15 years of 75s & ZTs now an XTrail Join Date: Nov 2006 Location: Danbury, Essex Posts: 3,761 Thanks: 18 Thanked 88 Times in 56 Posts	I think some people on this thread are looking at the trip computer not checking brim to brim! Either that or they are taking drugs:lol: A car the size and weight of a 75 doing 60mpg? My brother in law has an 08 1.3 Corsa diesel that struggles to do this Dave __________________ ZT 190 X Power Grey The Only Colour is this Dark Silver!! When I was a kid I was scared of earwigs because I thought they actually lived in your ears. I was even more terrified of cockroaches!

13th July 2008, 21:35	#29
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Last brim to brim check returned 48.2mpg but that was mainly motorway work at non peak times with little town work. Just motorway 55mpg perfectly possible. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

13th July 2008, 21:47	#30
GrahamP Loves to post Rover 75 2.0 CDT Club Automatic Join Date: Apr 2008 Location: Park Gate Posts: 438 Thanks: 0 Thanked 0 Times in 0 Posts	Run up to Aylesbury and back 182 miles filled to brim at start, filled to brim on return 16.5 litres = 50.31 mpg. __________________ Graham 3606 [SIGPIC][/SIGPIC]