Questions, calculator feedback and factual corrections are welcome. We use clear sources and editable assumptions, and we will review credible correction requests.
Email contact@garageandgrid.com for a question, a suggested improvement or a possible error. For a correction, include the relevant page or calculator, the figure or statement you believe is incorrect, and a reliable supporting source where possible.
For a website security vulnerability, email security@garageandgrid.com. Please do not use the general contact address for sensitive vulnerability details. Our published security contact file confirms this address.
Do not send payment details, identity documents, vehicle identification numbers, account passwords or other sensitive personal information. Garage & Grid does not need this information to review a calculator question or correction.
We review messages in good faith. Where we identify a material error, we will correct the affected result, source note or methodology as soon as reasonably practical.