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23rd November 2015, 17:05 | #1 |
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rover 75 cdt tourer Join Date: Nov 2015
Location: Tamworth
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mpg 75cdt tourer
Apologies if this has been mentioned before.
my 75 (147000m) is only doing 30 mpg. This is a round trip to work of 13 miles. my journey to work consists of a fair few islands, stop start at junctions and a few sets of lights. My journey home is mostly dual carriageway with a couple of islands. Surely it should be better than that ? |
23rd November 2015, 17:06 | #2 |
This is my second home
MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012
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Is yours a manual or auto?
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23rd November 2015, 17:45 | #3 |
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rover 75 cdt tourer Join Date: Nov 2015
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It's a manual. It does take a long time to warm up though, I can leave home for work and by the time I get there the gauge is only about a quarter of the way to normal. Could this be the reason it uses alot of fuel?
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23rd November 2015, 17:47 | #4 |
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ZT260SE TF160 ZT135+ Join Date: Mar 2008
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Sounds like a dodgy thermostat maybe?
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23rd November 2015, 17:53 | #5 |
MG ZT Join Date: Jan 2011
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Yes, check the actual running temperature using the on board diagnostics mode in the speedo.
1 Put key into ignition and turn it to position 1 (instruments activated). 1a If you intend driving with diagnostic mode active, start the engine now. 2 Press and hold the trip reset button. 3 the LCD display will show "test 1.-" 4 Immediately press the reset button every half second until you get to "test 19.-". (19.0 allows access to diagnostic mode) 5 The display will now show alternating "Log 1 -on" / "Log 1 -off" 6 While it shows "Log 1 -off" press the reset button and with no delay press the trip until you step through to test 7 This will display the temperature in degrees Brian |
23rd November 2015, 17:56 | #6 |
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Rover 75 Saloon CDTi Join Date: Oct 2015
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Your only doing a 6 1/2 miles journey from cold every time - so 30 MPG is not really that bad !
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23rd November 2015, 17:57 | #7 |
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1.8t Tourer Join Date: Oct 2011
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Yep that's it. Although slow to warm up it should be up to temp by about 4-8 miles (depending on the exterior temp and driving conditions). That is to say the needle pointing at 9'o' clock - even then due to the way the needle works it sometimes isn't fully warm. Search the forum for 'diesel thermostat' and 'renault thermostat' for possible causes and solutions.
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23rd November 2015, 18:02 | #8 |
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Rover 75 Saloon CDTi Join Date: Oct 2015
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Mine is up to the half way point on the guage after about 4 miles - but the auto box does hold it in lower gears until its warmed up.
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23rd November 2015, 18:31 | #9 |
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When did you last change your air cleaner?
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23rd November 2015, 18:36 | #10 |
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Rover 75 Saloon Join Date: Aug 2015
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mpg 75cdt
my 75 cdt auto saloon with a mixture of town / motorway driving averages 45+ mpg
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