In a FEDS Note, Federal Reserve Board staff analyze the 2021-2022 semiconductor shortage and estimate that U.S. light vehicle production fell by more than 2 million units relative to a baseline based on fourth-quarter 2020 output. Automakers contained further losses by prioritizing higher-margin vehicles and removing chip-intensive features. A counterfactual exercise suggests that selective feature deletions may have prevented an additional 100,000 to 200,000 lost units, although these measures reduced the availability of lower-priced vehicles and may have affected vehicle quality. Production fell 20% below fourth-quarter 2020 levels by the third quarter of 2021 and did not return to pre-crisis levels until early 2023. Microcontroller lead times roughly doubled from 15 to 30 weeks, prompting manufacturers to reduce production of lower-priced models and omit features such as infotainment systems, wireless charging and keyless entry. Vehicles with high infotainment exposure recorded production rates about 0.5% below less-exposed vehicles over 2021-2022, while average adoption of infotainment features in model-year 2022 vehicles was about 6 percentage points below pre-pandemic trends. The analysis warns that future disruptions may center on advanced logic and memory components rather than mature-node microcontrollers. Software-defined vehicles, driver assistance systems and autonomous driving capabilities are increasing semiconductor demand and may put automakers in greater competition with artificial intelligence companies for advanced chips and memory.