This paper investigates excessive fuel consumption of compressor drivers caused by common compressor faults. Pressure versus volume (PV) analysis techniques will identify deficiencies, quantify fault severity, and will be used to estimate the resulting excessive fuel consumption. Empirical fuel measurements of the drivers are analyzed before and after the fault correction and are used to calculate immediate economic savings from repairs. Performance and capacity improvements are also analyzed, providing a complete economic picture of maintenance and operational payback.