We brought our 2000 Toyota Sienna in for a check engine light code reading today. They determined, based on the code, that it needed new spark plugs and wires to fix the problem (over $600). Oh, since they would be in the general area, they noticed a little valve cover gasket leak ($630 more).
They became a little "sheepish" when I mentioned that less than 10,000 miles ago, I had a complete 120,000 preventive maintenance done there (over $1800 -all preventive maintenance, and close to half of what the car is worth!).
Same Day Auto had replaced the spark plugs at that time, and the spark plugs only need replacing about every 120,000 miles.
Why would they not replace the wires when replacing the spark plugs the first time? It's kind of like replacing a timing belt without replacing the water pump. Not good automotive practice for future cost saving on repairs --especially when charged 3 hours labor to change the spark plugs because of the location on the engine. What about the 3 year/36,000 warranty on repairs so prominently advertised?? Is it just ink on paper? No mention was made of the warranty after bringing up, "You've just recently changed the spark plugs". What they did then offer... to replace just the wires for $549. Such a deal! Really?