jdpd 0 Report post Posted August 19, 2007 Hi, i recently have noticed quite a large petrol consumption increase, i have a bmw e38 728i 1996. It used to hover around 12.8L/100km and now its up around 16L/100km. And yes ive tried reseting etc, and no my drivin style hasnt changed or my drving locations, e.g. motorway use. What are the common issues on a BMW e38 that can cause the engine to be come inefficient? Thanks! Quote Share this post Link to post Share on other sites
M325is 0 Report post Posted August 19, 2007 New steel cap boots? Reading it the wrong way? I thought consumption guage reads Miles/Gallon or Km/Litre, maybe you are feathering the gas and saving more?? Quote Share this post Link to post Share on other sites
cainchapman 0 Report post Posted August 19, 2007 Tyre pressures dropped. Is the water temperature normal still? Hand brake? I'd get it to a mechanic for a check. You don't really want to wait until it's a major problem. Quote Share this post Link to post Share on other sites
320guy 0 Report post Posted August 22, 2007 Resize your sig picture? Its f**king huge! Quote Share this post Link to post Share on other sites
MADBMA 0 Report post Posted August 23, 2007 Resize your sig picture? Its f**king huge! yeah man make it a bit smaller, the computers at work cant handle much.but back to your question could also be an oxygen sensor Quote Share this post Link to post Share on other sites
tibbs.james 1 Report post Posted August 29, 2007 When was the air filter last checked replaced ? And if my memory serves me correctly if one of the water temp senders isn't work properly can that cause problems with the ecu trying to think diffierently ? please correct me if im wrong. Checking all the regular service stuff isn't a bad idea. if it dosn't fix the problem you still might find an increase somewhere ! Quote Share this post Link to post Share on other sites
