Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Replacing spark plugs? in Cadillac SRX Forums; I've got a 2004 V6 AWD SRX with 52,000 miles on it. I get all maintenance done as required and ...
I've got a 2004 V6 AWD SRX with 52,000 miles on it. I get all maintenance done as required and just replaced the tires. What bothers me is the gas mileage. I'm only getting about 12.5 MPG. Granted I live about 5 minutes from work and do mostly in town driving but about 6 months ago I was getting between 17-19 MPG. I'm curious if I should replace the spark plugs even though I've read the OEM ones are good for 100,000 miles.
Automobile(s): 2007 SRX4 N*, 2004 Infinity G35 Coupe
Re: Replacing spark plugs?
Not enough info......your climate might help us for starters. Winter gas formulation and longer warm ups. If your climate is like mine, your car wasn't reaching operating temperatures by the time you got to work and shut it down.
Second, if you used to get 17-19 mpg with cold start ups, five miles to work, and mostly in-town driving, I'd say you used to have the best gas mileagle of any of us. :-)