Engine Capabilities
We don't just fix engines — we make them better. Every build is an opportunity to improve on the factory formula.
Full Engine Rebuilds
M838T & M840T platform specialists. From bearing failures to complete fresh builds.
Performance Tuning
Custom ECU calibration, upgraded turbos, and dyno-validated power gains.
Head & Block Work
Precision machining, porting, and assembly in-house by master builders.
Warranty Builds
Documented, photographed, and backed by our build guarantee.
Service Tiers
From routine maintenance to full performance builds — engineered to unlock the full potential of your McLaren.
SCG M-Tier
McLaren Engine
At Supercar Garage ATL, we don't just work on McLarens—we engineer them to perform at another level. As a premier McLaren performance specialist, we developed the SCG Engine Program to address one of the most critical weaknesses in McLaren's M838T and M840T platforms: the factory connecting rods. The result is our SCG M-Tier McLaren Engine Build—a purpose-built engine solution engineered for owners who demand more. Reinforcing the foundation where it matters most, the M-Tier delivers increased power capability, uncompromising reliability, and long-term durability without sacrificing the drivability and character that make these cars exceptional. This isn't just an engine upgrade. It's the SCG standard—built for owners who refuse to settle for factory limitations.
SCG S-Tier
McLaren Engine
Take your McLaren beyond factory limits with the SCG S-Tier McLaren Engine from Supercar Garage ATL—the benchmark for independent McLaren performance and engine development. Developed, engineered, and assembled entirely in-house by the SCG team, the S-Tier represents the highest level of our engine program. Built for owners who demand uncompromising performance, race-level durability, and precision engineering, every component is selected and assembled with one objective: maximum performance without sacrificing reliability. This isn't a modified factory engine. It's an SCG-built performance platform, engineered to withstand serious power and deliver the confidence to push your McLaren harder. Built in-house. Engineered without compromise. Built to dominate. SCG S-Tier—when factory performance isn't enough.
SCG O-Tier
McLaren Engine
Push your McLaren beyond the limits of conventional performance with the SCG O-Tier McLaren Engine from Supercar Garage ATL—our ultimate high-performance engine solution built for those who demand nothing less than extreme capability. Engineered for maximum horsepower, track-level performance, and uncompromising durability, the O-Tier is designed to thrive under the most demanding conditions. Whether you're building a dedicated track weapon, chasing serious power, or replacing your factory engine with a stronger performance platform, the SCG O-Tier delivers the foundation to do it right. Available as a complete, fully assembled performance engine, long block, or purpose-built McLaren engine rebuild, every O-Tier is engineered with precision and assembled to SCG standards. More power. More strength. Zero compromise. SCG O-Tier—built for the McLaren that refuses to stay stock.
We Are The McLaren Experts
From 22 countries across the globe, McLaren owners trust us with the full spectrum of service — every model, every system, every build. From the 12C to the P1, no one commands these machines like we do.
We don't dabble. We don't generalize. Our singular, obsessive focus on McLaren is what separates the specialists from the rest — and it's why the most discerning owners worldwide hand us their keys.
Frequently Asked Questions
Do you only work on McLarens?+
Yes. Supercar Garage ATL services, repairs, and upgrades McLarens exclusively. That singular focus is what makes us specialists rather than generalists.
Do you use genuine McLaren parts?+
We use genuine McLaren OEM parts for warranty work, and proven OEM-equivalent parts where appropriate. We'll always discuss options and pricing before any work begins.
Can you service the P1 and other Ultimate Series cars?+
Yes. We are certified to service the P1 hybrid powertrain, Senna, and 765LT. These cars require specialized tooling and training that most independent shops don't have.
Do you offer pre-purchase inspections (PPI)?+
Absolutely. Our comprehensive PPI covers every major system and includes a detailed report. It's the smartest investment you can make before buying a used McLaren.