Can you add a head-up display (HUD) to a car after purchase in the UK?

Yes, you can retrofit a head-up display (HUD) to your car in the UK, but the functionality may be limited compared to factory-fitted systems. For UK drivers considering popular models like the BMW 3 Series or Mercedes C-Class, factory retrofit options are only available if the vehicle was originally designed to support HUD technology. Aftermarket HUD units that plug into the OBD port are available but may pose risks to your vehicle's electrical system. The main options are: 1) Genuine manufacturer retrofit - Only possible if your car's trim level supports HUD (e.g., adding it to a base model BMW 5 Series when higher trims include it). This provides proper integration with your dashboard and infotainment system. 2) Third-party HUD units - These OBD-connected displays show basic information like speed but lack integration with navigation or driver assistance systems. Be cautious as cheaper models may overload your car's electrical system. For UK motorists, the most reliable solution is choosing a vehicle with factory-fitted HUD from brands like Audi, BMW or Jaguar, where the technology is properly integrated with the vehicle's systems.