How much does it cost to fix computer on a audi a4 1995?

The cost to fix a computer (ECU) on a 1995 Audi A4 can vary widely depending on the specific issue and location. Repairing or reprogramming an ECU can range from $100 to $500, while a complete replacement can cost between $300 and $1,200, including parts and labor. Additionally, diagnostic fees may apply, typically around $100. It's best to get a quote from a qualified mechanic for an accurate estimate.