Application of underbody sealants is a part of the vehicle painting process. The air of this process contains solvents, which are typically eliminated using thermal afterburner treatment. Based on life cycle considerations, the present study deals with the question whether the reduction of solvent emissions by burning of natural gas is reasonable from an environmental point of view. Based on some examples, the study demonstrates that environmental impacts are not shifted from reduced solvent emission towards increased CO2 emissions; rather, the reduction of solvent emissions is a welcome side effect when generating heat which is needed in the painting process anyway. The method of life cycle consideration is applicable on parts of the vehicle painting process.