Was very happy with them. Took my car in for a noise that was hard to detect, two other shops had blown me off about it and did not take time to look into it. Superior actually looked into in, found a problem that was very serious, but was unsure if that it would also fix the original problem. Which it did. The other shops I went to could have potential left me with no vehicle because of thier lack of diving it to test and taking a look. This will now be my one and only shop.