How do I check a transmission shop’s rebuild failure rate before buying?

Request the warranty log, the work orders for returned vehicles and any goodwill repairs done without a claim. The goodwill jobs are easy to miss and they matter. Match them to the total rebuilds for the same period so you can see the proportion yourself instead of relying on a figure the seller supplies.

Next, read the causes. Was it a bad part from one supplier, a technician who is no longer there, or a vehicle type the shop should avoid? Each tells you something different about whether the problem leaves with the cause. Ask who covers the cost of repeat work and whether the shop’s supplier shares it.

Finally, talk to the lead technician, if the seller allows it, and look at how the shop tests units before they leave. Check online reviews for patterns too. A buyer cannot inspect a promise, so ask what the seller expects you to inherit if a claim arrives after closing. Your lawyer can advise on how that risk is handled in the contract. Compare the shop’s habits with its claims too. A shop that logs every comeback carefully usually knows its weak points, while one that keeps almost no records may simply not be counting what goes wrong.

Key takeaways

• Match warranty and goodwill repairs to total rebuilds in the same period.
• Read why jobs came back, not just how many.
• Ask how claims that arrive after closing will be handled.