Could be your air/fuel ratio and/or O2 sensor. If they are defective or coated with enough exhaust residue they may not give the PCM/ECM accurate readings. In a situation like this the PCM/ECM may not set a code or turn on the check engine light. I know because it was my experience with subpar gas mileage on my 2011 CRV with the original sensors. Spark plugs can also be an issue. Take them out & have a look at them (gap, color, oil fouled?).Hi all,
My 2005 CRV, which I bought about 3 months back(134k Kms on), seems to have quite bad fuel economy, about 13-14L/100kms on mixed city and highway usage.
The car was serviced just after I got it, and doesn't really have any issue wrt how it runs and drives. I fill-up 95 octane, and using FUCHS 5w-40 engine oil (as the mechanic raved about it). I drive quite conservatively and don't put much stress on the engine. Pickup and power seem to have no issue.
What might be the cause of bad fuel economy? Is it just the age of the car and it is to be expected?
It becomes rather expensive to take the car on longer trips with this fuel economy, combined with current fuel prices!