In this paper, we present a signalling-based explanation for the empirical phenomenon that a longer warranty may be offered by a product with lower quality. Our explanation hinges on differences in consumer knowledge about reliability of established and newer products. In a product market where a new entrant competes with an established product, we show that signalling behavior leads to an outcome where the less reliable product may carry the longer warranty.
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Subramanian Balachander (2001) studied this question.
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