Custom Auto Shop in Southern California
Welcome to Speedhaus Automotive – your premier custom auto shop in Southern California specializing in high-performance European vehicles. Located in Newbury Park, our independent and enthusiast-owned shop is dedicated to delivering precise craftsmanship, honest service, and next-level automotive customization. At Speedhaus, we treat every vehicle like it's our own—because we’re car enthusiasts too.
About Speedhaus Automotive
At Speedhaus Automotive, we’re not your average auto shop. We’re a tight-knit team of European car specialists who live and breathe performance. Our facility is fully equipped with cutting-edge diagnostic tools, precision tuning equipment, and performance-grade parts. Whether you're upgrading your car for the street or prepping it for the track, you’ll find expert-level service backed by decades of hands-on experience.
We’ve built our reputation on trust, quality, and technical mastery. Unlike dealerships or generic chains, Speedhaus Automotive is completely independent—which means you get personalized service and true customization with no corporate markups or pressure to buy unnecessary services.
European Car Customization Experts
As a specialized auto customization shop in Southern California, our expertise lies in high-end European vehicles. We proudly work on:
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From M Performance upgrades to full suspension overhauls, we understand the precision that BMW drivers expect.
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Whether you’re enhancing AMG performance or refining luxury features, our team delivers seamless integration and elite performance.
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From Quattro drivetrain tuning to RS performance mods, we help Audi owners take full advantage of their engineering.
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We offer tailored solutions for both air-cooled and water-cooled models, including exhaust systems, suspension tuning, and performance mapping.
If you’re passionate about your car’s performance, design, and handling—Speedhaus is the shop that gets it.
Auto Customization Services We Offer
Speedhaus Automotive offers a full spectrum of performance and cosmetic auto customization services in Southern California, tailored specifically for performance-minded drivers. Here’s a look at what we can do for your vehicle:
Performance Customizations
Engine Tuning & ECU Remapping
Unlock hidden power and torque with precision tuning. We offer custom ECU remaps and dyno-based calibration to enhance throttle response, fuel delivery, and boost control—safely and effectively.
Brake System Enhancements
Optimize your stopping power with big brake kits, performance pads, rotors, and stainless steel brake lines. Essential for both spirited street driving and track use.
Aero & Body Enhancements
Add a performance-inspired look with custom carbon fiber splitters, spoilers, side skirts, and diffusers. Professionally installed and balanced for function and form.
Cosmetic Detailing & Touches
We offer badge swaps, blackout packages, painted calipers, and trim accents to personalize your vehicle’s exterior down to the smallest detail.
Suspension Upgrades
Improve ride quality, cornering ability, and road feedback with coilovers, sway bars, and performance bushings. Whether you're setting up a canyon carver or a track-day beast, we have the solution.
Wheel & Tire Fitment
We help you choose the right wheels and tires for maximum grip, proper fitment, and optimized stance—balancing both looks and performance.
Exhaust System Upgrades
Upgrade your exhaust to increase flow, reduce backpressure, and create the aggressive tone your performance car deserves. We offer full systems, downpipes, and high-performance mufflers.
Cosmetic Customizations
Lighting Upgrades
Modernize your car’s appearance and visibility with custom headlights, LED retrofits, smoked taillights, and more.
Interior Customization
Upgrade your cabin with Alcantara or leather steering wheels, custom badging, shift knobs, and other premium trim enhancements that improve feel and aesthetics.
Our Custom Auto Customization Process
At Speedhaus Automotive, we take a consultative and detail-driven approach to every project. Whether you’re seeking subtle modifications or a full custom build, our process ensures you get the results you envision—with the performance and reliability you expect from a premier custom auto shop in Southern California.
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We start by listening. During your initial consultation, we learn about your goals, driving style, and performance expectations. Whether it's street performance, track use, or visual enhancements, we help define your build’s direction.
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Next, we conduct a full inspection of your vehicle. This allows us to assess its current condition, identify any underlying issues, and create a foundation for your upgrades. We ensure your vehicle is healthy before modifications begin.
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We develop a personalized build plan, outlining recommended upgrades and modifications. Our team sources top-tier parts and components from trusted brands to match your goals—ensuring compatibility, quality, and optimal performance.
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Once the parts are in, our expert technicians handle the installation with meticulous care. From precision tuning to custom welding and fabrication, everything is executed in-house using the latest tools and techniques.
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We don’t hand back your keys until we’ve tested every upgrade. Whether it’s an ECU tune or suspension install, we verify that your vehicle performs flawlessly and safely under real-world driving conditions.
Why Speedhaus is Southern California’s Premier Auto Customization Shop
At Speedhaus Automotive, we do things differently than your typical custom auto shop. Here’s why performance enthusiasts and car lovers across Southern California choose us:
Owned and Operated by Enthusiasts
We’re not just mechanics—we’re drivers, builders, and motorsport lovers. Every recommendation we make is rooted in real-world experience.
Experts in European Performance
We know European cars inside and out. Our team understands the engineering behind every model, ensuring upgrades are not only safe and effective—but also in harmony with the vehicle's systems.
Attention to Detail
We take pride in doing things the right way. Our facility is spotless, our equipment is cutting-edge, and our work speaks for itself.
Honest, Transparent Service
Unlike many shops that upsell services you don’t need, Speedhaus operates with integrity. We give you honest diagnostics, fair pricing, and trusted advice—because we believe in building relationships, not just invoices.
Our Service Area Coverage
Speedhaus Automotive is proud to provide ECU performance car tuning services to customers throughout Southern California. Whether you’re just around the corner or making the drive for quality tuning you can trust, we serve:
Thousand Oaks
Westlake Village
Agoura Hills
Oak Park
Newbury Park
Calabasas
Malibu
Oxnard
Camarillo
Ventura
Simi Valley
Moorpark
Woodland Hills
Contact Speedhaus Automotive Today
Whether you’re looking for better handling, more horsepower, or a custom look that turns heads—Speedhaus Automotive is your trusted partner in high-performance auto customization.
Ready to get started? Contact us today for a free quote. Submit a contact form on our website or call us directly at (805) 262-2088. Let’s build your dream car, one upgrade at a time.
FAQs
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We specialize in customizing European vehicles, including BMW, Mercedes-Benz, Audi, Porsche, and other high-performance brands. Our team has extensive experience working on these makes and understands the unique engineering behind each model.
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We offer both performance and cosmetic modifications. From engine tuning and suspension work to custom exhausts, wheels, wraps, and carbon fiber accents—our team can help personalize every aspect of your vehicle.
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Yes, we can install customer-supplied parts if they meet quality and compatibility standards. However, we always recommend using parts we source directly, as we work with trusted brands and can ensure optimal fitment and performance.
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Yes, we have extensive experience in track car preparation and tuning. Whether you're aiming for competitive racing or weekend track days, we can help optimize your vehicle for performance, reliability, and safety.