Just spark plugs and wires? That's good. But a couple hundred dollars?? Unless labor is expensive, that doesn't sound right. Getting new spark plugs and spark plug wires is among the things I needed to get for my car a few months ago. I got them myself at an auto part store, cost me $40, and I had my dad install them, which took him maybe 30 minutes. I hope either there's a misunderstanding when it comes to the price, or there is indeed something else wrong that's costing that much, because the spark plugs and wires should definitely be cheaper than that.
