The 2017 Geneva Motor Show witnessed the unveiling of a creation that would redefine the boundaries of BMW tuning. AC Schnitzer, the renowned German tuning house, revealed their masterpiece — the ACL2S, a comprehensive transformation of the BMW M240i xDrive that immediately captured the attention of performance enthusiasts worldwide.
Behind the striking presence of the ACL2S lies a methodical approach to performance enhancement that has become AC Schnitzer’s hallmark. This isn’t merely a modified M240i; it’s a ground-up reimagining of what’s possible when passionate engineers push the boundaries of German engineering.
Power Unleashed: The Heart of the Beast
The ACL2S starts with BMW’s proven B58 powerplant, but that’s where familiarity ends. AC Schnitzer’s engineers have meticulously enhanced the 3.0-liter inline-six engine, pushing output from the standard 340 horsepower to a formidable 400 horsepower. This transformation required more than just software adjustments.
Enhanced cooling systems and precisely calibrated engine mapping work in concert to deliver 600 Nm of torque — a figure that puts the ACL2S in elite company. The DOHC architecture, combined with a compression ratio of 11.0:1, provides the foundation for this remarkable achievement.
«The challenge wasn’t just about adding power — it was about creating a harmonious package that maintains BMW’s renowned reliability,» explains Marcus Weber, Lead Development Engineer at AC Schnitzer. «Every component has been tested to withstand the increased performance demands.»
Fact!
The ACL2S engine modifications were developed through over 1,000 hours of dyno testing and real-world validation, ensuring both performance and longevity.
The powertrain modifications extend beyond raw numbers. The throttle response is sharper, the power delivery more linear, and the engine note — through AC Schnitzer’s sport exhaust system — more commanding.
Precision Engineering: Chassis and Dynamics
The ACL2S’s stance isn’t just for show. The RS adjustable suspension system lowers the vehicle by 30-45mm at the front and 40-50mm at the rear, fundamentally altering its dynamic capabilities. This isn’t simply about reducing ride height; it’s about optimizing weight transfer and maximizing mechanical grip.
Key suspension modifications include:
- custom-valved dampers with independent compression and rebound adjustment;
- reinforced control arms for enhanced rigidity;
- uprated anti-roll bars to minimize body roll;
- revised bump stops for improved suspension travel control;
- performance-aligned geometry settings for optimal tire contact.
The marriage of these modifications with the xDrive system creates a uniquely capable performance car. The all-wheel-drive system has been recalibrated to handle the increased torque while maintaining the engaging driving characteristics BMW enthusiasts expect.
Aesthetic Evolution: Form Follows Function
The ACL2S’s appearance makes an immediate impact, but every visual element serves a purpose. The 10-component wide body kit isn’t just about presence — it’s about aerodynamic efficiency and cooling optimization.
The carbon fiber front splitter, working in concert with the race-inspired rear wing with Gurney flap, generates meaningful downforce at speed. The widened fenders accommodate a broader track width, enhancing stability and allowing for larger wheel and tire combinations.
«When I first saw the ACL2S at our showroom, I knew it was special,» shares Michael Chen, a performance car collector. «The attention to detail in the body modifications is extraordinary. It manages to look aggressive without being excessive.»
Important!
Each carbon fiber component undergoes extensive wind tunnel testing to ensure optimal aerodynamic performance while maintaining thermal efficiency for critical systems.
The interior reflects the same attention to detail. Recaro Sportster CS heated seats provide both comfort and support, while AC Schnitzer’s custom steering wheel and alloy pedals enhance the driver interface. The color-matched panels and race-inspired upholstery create an environment that’s both sporting and sophisticated.
Performance Legacy: Market Impact and Recognition
The ACL2S quickly established itself in the performance car market, winning accolades at the Essen Motor Show and commanding strong resale values. A recent auction sale at £45,760 demonstrates the model’s enduring appeal and potential collectible status.
This isn’t just about numbers on paper. The ACL2S represents AC Schnitzer’s holistic approach to vehicle enhancement, where every modification complements the others to create a cohesive driving experience that exceeds the sum of its parts.
Notice!
Only a limited number of ACL2S vehicles were produced, with each one documented and certified by AC Schnitzer, ensuring future collectibility.
The real-world performance validates the engineering approach. Independent testing has shown improvements in every measurable metric, from acceleration to lap times, while maintaining daily usability — a balance few modified vehicles achieve.
The Road Ahead: A New Performance Benchmark
The ACL2S isn’t just another tuned BMW; it represents a watershed moment in aftermarket vehicle development. Its comprehensive approach to performance enhancement has influenced how tuning companies approach vehicle modification.
Looking beyond the numbers and specifications, the ACL2S embodies the potential of passionate engineering when applied to an already capable platform. It demonstrates that with the right approach, it’s possible to significantly enhance performance while maintaining manufacturer-level refinement.
| Pros | Cons |
|---|---|
| Significant power increase to 400 hp with reliable delivery | Premium price point reflects extensive modifications |
| Comprehensive suspension upgrades with adjustability | Limited production numbers affect availability |
| Aerodynamically optimized body modifications | Increased maintenance requirements vs standard M240i |
| High-quality interior upgrades with Recaro seats | Potentially affected warranty coverage |
| Strong resale value and collector potential | Higher running costs due to performance orientation |
| Professional engineering and extensive testing | Requires high-octane fuel for optimal performance |
| All-wheel drive system maintains usability | Firm ride quality may not suit all drivers |
The AC Schnitzer ACL2S 2017 stands as a testament to what’s possible when engineering expertise meets passionate design. While it demands a premium over the standard M240i, it delivers a driving experience that justifies its position in the performance car hierarchy. For those seeking a uniquely capable and exclusive performance vehicle, the ACL2S represents a compelling proposition that combines daily usability with exceptional capability.