My wife's 2007 SX4 Crossover is nearing it's 30,000 mile service interval. I called one Suzuki dealership and was quoted $850 for the service. The next dealership quoted me $995. Is this correct? I have never owned a so-called economy car that requires a $1000 service. Looking in the maintenance guide, it appears only a replacement of the spark plugs, oil, air filter and coolant is required. This doesn't really compute to $1000.