Bondline readout (BLRO) is a coating defect frequently exhibited on adhesively bonded, polymeric automotive body panels painted with high-glamour/flow clearcoats. BLRO or telegraphing results from Marangoni-type, surface-tension-driven flows. The goal of this study is to use an efficient one-dimensional numerical code (based on the lubrication approximation) to obtain further insight into the mechanism of temperature- and concentration-induced BLRO flows in order to validate a proposed BRLO mechanism and ultimately to help eliminate the highly undesirable BLRO coating defect. Further insight is realized by investigating numerically the effects on BLRO of gravity and five parameters-initial film thickness, heating rate, viscosity, solvent volatility, and solvent-to-resin surface-tension ratio. Possible solutions to the BLRO problem are discussed.