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VW – AUDI – PORSCHE – BENTLEY – LAMBORGHINI – FERRARI – MASERATI – TESLA

1125 Las Brisas Place
Placentia, CA 92870

VW – AUDI – PORSCHE – BENTLEY – LAMBORGHINI – FERRARI – MASERATI – TESLA

1125 Las Brisas Place
Placentia, CA 92870

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Customer Reviews

Welcome to Auto Union Tuning

Premium Automotive Service in Placentia, CA

Auto Union Tuning is a complete dealer alternative where we diagnose, repair and service your VW, Audi, Porsche, Bentley, Lamborghini, Ferrari, Maserati, and Tesla. We Proudly service the Placentia, Anaheim Hills, Yorba Linda, Chino Hills, Diamond Bar, Fullerton, Corona, Brea, La Habra, La Mirada, Orange, Irvine, Tustin, Huntington Beach, Westminster, Garden Grove, Seal Beach, Long Beach, Fountain Valley, Costa Mesa, Newport Beach, and Santa Ana areas. Along with the experience, training, and vast knowledge acquired through the manufacturer, our technicians are true car enthusiasts that use the latest tools, diagnostic equipment, and same procedures used by the dealership. Using only genuine and the highest quality O.E.M. parts, there is no job too big or small. We also stock and sell many parts over the counter for the DIY enthusiast.

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Auto Union Tuning
1125 Las Brisas Place
Placentia, CA 92870
(714) 841-1000
Mon-Fri: 7:30am-5:30pm
Saturday: 8am-3pm
Sunday: Closed
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Auto Union Tuning
1125 Las Brisas Place
Placentia, CA 92870
(714) 841-1000
Mon-Fri: 7:30am-5:30pm
Saturday: 8am-3pm
Sunday: Closed
VisaMasterCardDiscoverAmericanExpressbridgestoneCheck

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Shop Partners

APR – Unitronic – Cobb – Liquimoly – Motul – Racing Brake – ECS Tuning – 034 Motorsports – CTS Turbo – JHMotorsports – Integrated Engineering – Frankenturbo -Eurodyne – Nuespeed – VMR Wheels – Titan7 Wheels

About Us

Established in 2011.

Owners’ Raz and Dave were both trained at the Audi Academy in 2006 and have been working in the industry many years prior to that. Our staff consists solely of automotive enthusiasts who are factory trained technicians with decades of dealership experience. All of our staff owns, drives and modifies the cars that we work on, day in and day out. Not only can we repair your car, but we have the tools, knowledge and experience to make it better than the day it was sold new.

Southern California’s Best Auto Repair Experience

What sets Auto Union Tuning apart from all of the others in Placentia, CA?

Using only genuine and the highest quality O.E.M. parts, there is no job too big or small. We also stock and sell many parts over the counter for the DIY enthusiast.

  • Oil and filter changes
  • Tire mounting and balancing
  • Alignments
  • Factory key programming
  • CARB Legal Performance software tuning
  • Dynamometer testing
  • Regular maintenance, major and minor services
  • OEM plus upgrades
  • Electrical system repairs and diagnosis
  • Suspension repairs and modifications
  • Brake system repairs and upgrades
  • Engine mechanical repairs, modifications, diagnosis
  • Transmission repairs and diagnosis

We strive to deliver the most exceptional experience for our clients. With your satisfaction being our highest priority. Stop by or give us a call during our normal hours, or email anytime.

Trust: When it comes to auto repair in Orange County, CA, it’s all about earning loyalty and trust by doing our very best every day. We are determined to earn and keep your trust.

Talent: At Auto Union Tuning, you can rest easy knowing that our highly-skilled, experienced auto service professionals are handling your car. Our technicians bring years of experience, skill, and education to the Placentia auto repair table.

Time: We take the time we need to provide you with top quality service, and we take the time to talk to you about what that means. We listen to you so we understand your needs and goals for your auto repair.

Recently Serviced Vehicles

2010 Volkswagen New Beetle

Volkswagen New Beetle

Mileage
96,772
Service Date
7/1/2022
Services Performed
  • Coolant level was low, put car up and found the radiator is leaking coolant. There is also a plastic union for the heater core line that should be replaced because it has dried coolant all around it.
  • RADIATOR – Remove & Replace
  • Replace Heater Core Coupler
  • Tire pressure set to manufacturer recommended pressure
 
Cesar P. gave our service a 5 star review on 7/1/2022

2022 BMW M5

BMW M5

Mileage
3,885
Service Date
6/28/2022
Services Performed
  • Installed Dinan lowering springs.
  • Performed 4 wheel alignment with road test to ensure accuracy.
  • Tire pressure set to manufacturer recommended pressure
 
Abdul R. gave our service a 5 star review on 6/28/2022

2014 BMW 428i

BMW 428i

Mileage
45,346
Service Date
6/25/2022
Services Performed
  • – Vehicle is equipped with Dinan piggyback ECU. There appears to be no other physical modifications to the car besides a Dinan axle-back exhaust which does not affect vehicle emissions. – CEL present for fault 12BD60: O2 sensor before catalytic converter, electrical: open circuit virtual earth. O2 sensor and wiring appears in good shape visually. Code re-appears immediately after clearing codes. Recommend removing Dinan piggyback ECU prior to further diagnosis to determine if it is the cause before testing sensor/wiring.
  • Removed Dinan ECU, cleared codes, & road tested vehicle. No fault codes have returned. O2 sensor is functioning properly, but there may be an issue with the Dinan wiring harness or a software update required to eliminate the CEL when it is installed.
  • Tire pressure set to manufacturer recommended pressure
 
Alan L. gave our service a 5 star review on 6/25/2022

2018 Volkswagen Golf

Volkswagen Golf

Mileage
45,377
Service Date
6/14/2022
Services Performed
  • Tire pressure set to manufacturer recommended pressure
  • Found voltage is currently set to 3.422 and no faults stored. Recommend customer returns if faults come up after tuning the vehicle.
  • Install updated APR ECU software
  • APR tune upgrade (91 octane)
 
David F. gave our service a 5 star review on 6/15/2022

2013 Audi S5

Audi S5

Mileage
44,258
Service Date
6/14/2022
Services Performed
  • Performed brake fluid flush. Road tested vehicle to ensure vehicle is operating OK.
  • Performed oil and filter change and reset reminder (if applicable)
  • Tire pressure set to manufacturer recommended pressure
  • Tire pressure set to manufacturer recommended pressure
  • Performed Tire rotation
  • All fluid levels look good, brake pads are still good. Front tires are at 7/32 rear are at 6/32.
 
Sergio P. gave our service a 5 star review on 6/14/2022

2007 BMW 335i

BMW 335i

Mileage
153,353
Service Date
5/27/2022
Services Performed
  • Install Dinan Stage 1 ECU Tune. Cleared fault codes to ensure no fault codes are present and test drove vehicle to ensure vehicle is operating OK.
  • Tire pressure set to manufacturer recommended pressure
 
Dan M. gave our service a 5 star review on 5/27/2022

2010 Volkswagen Golf

Volkswagen Golf

Mileage
106,254
Service Date
5/23/2022
Services Performed
  • Found faults regarding no signal to ECU. Checked o2 sensor wiring and wiring is OK.
  • Verified concern. Found intermittent communication loss to ECU. Recommend replacing ECU and retesting.
  • Tire pressure set to manufacturer recommended pressure
 
Adrian P. gave our service a 5 star review on 5/25/2022

2017 Volkswagen Golf SportWagen

Volkswagen Golf SportWagen

Mileage
118,647
Service Date
5/23/2022
Services Performed
  • removed and replaced both head lights and confirmed both are operational
  • Tire pressure set to manufacturer recommended pressure
 
Steve M. gave our service a 5 star review on 5/23/2022

2017 Volkswagen GTI

Volkswagen GTI

Mileage
34,592
Service Date
5/20/2022
Services Performed
  • Install Sachs performance clutch kit
  • Tire pressure set to manufacturer recommended pressure
  • Resurface Flywheel while clutch is disassembled.
 
Barry P. gave our service a 5 star review on 5/21/2022

2010 Audi A3

Audi A3

Mileage
111,114
Service Date
5/11/2022
Services Performed
  • Test drove vehicle and can hear noise coming from the transmission when vehicle shifts gears. Performed clutch adaptation and noise persist. It is possible there is a low fluid issue or the clutches are showing signs of wear. Recommend performing a DSG service and continuing diagnosis
  • Performed oil and filter change and reset reminder (if applicable)
  • Tire pressure set to manufacturer recommended pressure
 
Roman L. gave our service a 5 star review on 5/19/2022

2012 Volkswagen Golf R

Volkswagen Golf R

Mileage
88,873
Service Date
5/17/2022
Services Performed
  • Installed ECS struts
  • P0303- Misfire on cylinder number 3 Cylinder disabling also present. Recommend new coil pack for cylinder number 3.
  • Replaced APR Ignition Coil with Factory Coil, cleared fault codes and test drove vehicle to ensure fault codes did not return and vehicle stopped misfiring.
  • Tire pressure set to manufacturer recommended pressure
 
Manny C. gave our service a 5 star review on 5/17/2022

2015 Volkswagen Golf

Volkswagen Golf

Mileage
60,117
Service Date
5/7/2022
Services Performed
  • Performed oil and filter change and reset reminder (if applicable)
  • Replace Engine Air Filter
  • Replace Cabin Air Filter
  • Tire pressure set to manufacturer recommended pressure
 
Cesar P. gave our service a 5 star review on 5/7/2022

Services:

  • Brakes & Brake Repair
  • Oil Changes
  • Tires & Tire Repair
  • Mufflers & Exhaust
  • Check Engine Light
  • Belts & Hoses
  • And Much More...
See All Services

Location:

Auto Union Tuning
1125 Las Brisas Place
Placentia, CA 92870
(714) 841-1000