Does the check engine light come on at certain milages?

The check engine light can turn on at any mileage, not just at specific intervals. It is triggered by the vehicle's onboard diagnostics system detecting an issue, such as problems with the engine, emissions system, or other components. While certain maintenance milestones, like 30,000 or 60,000 miles, may coincide with regular inspections, the light can illuminate anytime a fault is detected, regardless of mileage. Regular maintenance and monitoring can help prevent the light from coming on unexpectedly.