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Auto Union Tuning

4.9 (93 reviews)
Closed 8:00 am - 12:00 pm, 1:00 PM - 5:00 PM
Updated 3 months ago

Services - Auto Union Tuning

Check engine light

Engine oil light diagnosis

Auto general diagnosis

20 More Services

Auto noise diagnosis

Tire Pressure Monitoring System diagnosis

Auto no-start diagnosis

Auto vibration diagnosis

Auto diagnosis or inspection

Auto pre-purchase inspection

Auto maintenance

Auto fluids and filters maintenance

Oil changes

Auto repairs

Auto battery or electrical system repair

Auto brake repair

Auto engine repair

Auto exhaust repair

Auto light repair

Auto steering and suspension repair

Auto transmission repair

Auto wheel and tire repair

Routine automotive maintenance

Transmission leak inspection

Auto Union Tuning Photos

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Recommended Reviews - Auto Union Tuning

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Reviews With Photos

MK8 Golf R
Diego K.

I've been a customer of Auto Union since May 2024. My friend recommended them, and I'm so glad he did. They're incredibly attentive to my MK8 R, providing all the necessary maintenance at a better price than the dealership. They tuned my car, and it's been running like a dream ever since. I drive from Los Angeles to this place! I couldn't be happier with my car shop!

17' Passat Rline
Jared w.

Ive been here many times and trust me these guys know what they're talking about. From engine work to the suspension and even getting the right tune. Best shop I've been to and the only shop i go for all of my cars needs. The inside is clean and service writers are always very patient and knowledgeable. They always show love and give compliments on my car. As a paying customer i really appreciate the level of detail they put into every install. For your VAG needs come to AU Tuning. Shoutout to Nick for always being an email, call or text away!

We found this shop by word of mouth in our community. We took my son's GTI there to have it repaired and the shop exceeded my expectations. They were professional and Nick communicated throughout the entire process. Shop was clean and you can tell they pride in their work. They were very thorough and the prices were good! We will definitely go back if we ever need any of our cars repaired!

Remus exhaust for Golf R
Omar N.

Top-notch service and communication from this place. I purchased a Golf R earlier this year and finding a specialist shop to take care of my vehicle was a priority. I went with AU tuning due to their years in this business and the work they put into VW and Audi vehicles. Starting with communication, this place communicates highly efficiently. While emailing Raz and Nick, whether for maintenance, fixing an issue, or even finding me the parts I want. Their communication skills never missed a beat. I had them complete the 30k service on my Golf R here and I really liked that they took their time to document everything, at the end I got pictures confirming all the work they did and even pictures confirming the transmission leak from previous paperwork I received. I recently got a Remus exhaust installed here and they worked with me to get the parts from their suppliers. With confidence, I can say this is my home shop for my Golf R and I wanted to thank the team over at AU Tuning for all of the work they put in.

2016 Supercharged Mustang GT on E85
Mihailo M.

These guys are incredible. I have been going to Raz and Dave at AU Tuning for over a decade, through multiple cars starting back when I was a teenager coming in with a limp-mode 20th AE GTI to now. They were total pros and knew exactly what was wrong getting me back on the road same day. It's extremely rare to find a shop who's owners are still hands-on and maintain their legacy of professionalism and quality through their exponential growth and notoriety over the years. For years I have been recommending AU Tuning to my friends and family and stand by the quality of work they do to a near-religious extent. The shop has moved and so have I over the years, but I still take a 2 hour round trip specifically to continue going here. I have moved into many different platforms from B5 S4s, JCW Mini's, Porsche's, Mercedes' and now my Supercharged Mustang, and they still find ways to take care of me no matter the car. Joe has been taking care of my Mustang and knows the platform just as well as any of the V.A.G. cars they typically work on. Joe has been incredibly knowledgeable and services my car with fantastic attention to detail, keeping me updated every step of the way. I especially appreciate the SitRep he gives me on the car as it's a heavily modified track car and he genuinely wants to make sure it's at 110% every time it passes through his hands. I can't praise or thank these guys enough, and look forward to the next 10+ years of working together!

New rims m5

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4 years ago

Very efficient service. Front desk man Nick is excellent. Prices were fair and I would recommend their work.

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4 years ago

Took my 2022 Audi SQ5 here for an 034Motorsport tune and I'm very happy with the service provided! This is my shop now, for sure.

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6 years ago

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4 years ago

Great shop to bring my B7 Avant. The guys know their stuff. The move from HB was great for me, closer to the north county.

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6 years ago

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5 years ago

The guys there are super friendly and get work done efficiently. This is definitely my go-to place for all my GTI needs. Thanks!

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6 years ago

Excellent service provided. I've had a few things ordered and installed by them and all of it met my expectations!

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7 years ago

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Ask the Community - Auto Union Tuning

How much for oil change on 2017 Audi s3 OEM filter?

Please send us an email at service@autuning.com or give us a call at 714-841-1000 for pricing.

View All 4 Questions

Review Highlights - Auto Union Tuning

I told Nick I was completely new to the world of modifying cars, especially Audis, and he couldn't have been more helpful.

Mentioned in 26 reviews

Read more highlights

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Auto Union Tuning - autopartssupplies - Updated May 2026

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