I've got about 45k miles on my 2024 Mazda with direct injection and someone at work was warning me about carbon deposits clogging things up. Is this actually something I need to worry about now, or is it more of a 100k+ mile problem?
Don't stress about it at 45k miles - carbon buildup is a real thing with direct injection, but it's typically a long-term concern that shows up more in the 80k-120k range depending on driving habits and fuel quality. At your mileage, regular oil changes and using top-tier gasoline will keep things clean enough. If you're mostly doing highway miles and not idling constantly, you're in pretty good shape. Just stay on top of maintenance and you won't need to think about carbon cleaning for quite a while.
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