Tracking engine performance across time uses data collected in which records?

• A. Maintenance logs
• B. Fuel, Oil, and Mileage records
• C. Driving logs
• D. Fuel receipts

Answer: (B)

Tracking engine performance over time relies on data that reflect how the engine actually uses fuel, is lubricated, and accumulates wear. Fuel, Oil, and Mileage records provide those time-based measurements: fuel consumption shows efficiency, oil usage and changes indicate lubrication condition and potential leaks or wear, and mileage shows how far the engine has run. This combination lets you observe trends, catch deviations, and know when maintenance is needed. Maintenance logs track service actions, driving logs capture usage patterns, and fuel receipts only show cost, not engine condition over time, so they don’t provide the same trend information.