Shocked at fuel consumption

[btaps]

Hi all, have a query on fuel consumption....last Friday we picked up our 2007 discovery 3 SE V6 petrol, filled it up with premium unleaded, have travelled only 136klm....fuel gauge down under 1/2....computer says using 36litre per 100klm....any suggestions would be appreciated

[Yorkie]

Should have bought a tdv6...

Sorry nothing useful to ad than maybe early ownership brings greater use of the go pedal, lighter foot might help.

[Clarkey]

Get it to a good LandRover mechanic for a good going over. My V8 Disco only uses 15l/100km

[superquag]

Ignore the computer... fill it up again and calculate the Old Fashioned Way. Try doing either 100 or 200 km exactly, - no maths needed.

IF, it's still up there, take it back ASAP. 36litres/100km is a bit savage, even for a Land Rover...

Around 20 litres/100km is what I get out of my 3.9 litre (inefficient, ancient technology etc) v8 Classic.
Six cylnders is a better-balanced size for 4 litres than 8. Your modern engine should should drink less than mine.

[Scouse]

The D3 V6 is quite an old engine design & is less efficient than the V8.


[ame="http://en.wikipedia.org/wiki/Ford_Cologne_V6_engine"]Ford Cologne V6 engine - Wikipedia, the free encyclopedia[/ame]

[frantic]

A hole, in tank or fuel lines.
3.5 rrc I had was 18-20l/100k's, a 1976 V8 statesman 5.0 used 15-22L (22 on lpg). Prado 3.4 was 15-17 and a 4.0 v6 Prado was13-15 on lpg injection. It would start On petrol and switch over after 1-2 k's when warm enough.
36/100k's is One of 4 : hole, thief , gauge faulty or major problems.

[SBD4]

There has also been instances were the tank has collapsed for some reason reducing the volume. As well as doing the manual calculation mentioned above, check the amount of fuel you can fit in the tank.

[discovery39]

Hi all, have a query on fuel consumption....last Friday we picked up our 2007 discovery 3 SE V6 petrol, filled it up with premium unleaded, have travelled only 136klm....fuel gauge down under 1/2....computer says using 36litre per 100klm....any suggestions would be appreciated

WTF?

[PhilipA]

Collapsed tank will not cause this as the computer calculates the consumption from the injector duration and what gear it is in etc.

Although the V6 started as an old engine it has lots of modern hang on stuff and should be relatively economical , although AFAIR not as economical as a V8.

The main problem with them AFAIK is that the timing chains are at the back, and if you don't change the oil very often, it is an engine out job to fix the stretched chains.
Hmm maybe someone has mistimed the cams.
Most likely will be a detached or dead temperature sensor which tells the ECU the engine is cold and applies the choke/enrichment.

Regards Philip A

[Redback]

You can't compare a Discovery 1 or 2 V8 to a SE V6 D3 petrol engine, completely different engine, I'd be looking at things like, MAF, air filter, injectors, CAT(if it has one) take it back to where you got it from and get them to look at it, there is definately something wrong.

Although a thirsty engine compared to it's diesel brother, it should have better economy than 36l/100k, around town you should be getting 15l to 17/100, highway should be 10 to 12l/100k,

Also I've moved it here so as to get more responses.

Baz.