Valtteri Bottas says Cadillac must improve its poor Formula 1 reliability record after both he and Sergio Perez retired early from the Austrian Grand Prix with brake fires.<br>The Spielberg race continued a trend as Cadillac suffered a spate of reliability issues and operational errors, with Perez thwarted on Friday by electrical gremlins while Bottas' front floor tray caught fire due to a build ...<a class='more' href='https://www.motorsport.com/f1/news/valtteri-bottas-calls-for-cadillac-reliability-fixes-we-cant-learn-if-we-dont-finish/10835114/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>