Aston Martin has warned of deeper-than-expected losses this year, anticipating a full-year loss greater than £110 million. This has led to an 8% drop in shares, reflecting investor frustration. The company faces challenges from US tariffs, a slowdown in luxury consumption in key markets like North America and China, and uncertainty due to the US federal government shutdown. Aston Martin's performance is crucial for the UK luxury car sector and is seen as a barometer for global luxury demand.