The Mercedes-Benz CLA 45 AMG (internally designated as the C118) represents the high-performance variant of the CLA Coupe, produced between 2019 and 2021. Positioned as the flagship model within the CLA range, it aimed to deliver exhilarating performance and a sporty driving experience in a compact, four-door coupe package. This variant distinguished itself through its potent turbocharged engine, advanced all-wheel-drive system, and a sophisticated dual-clutch transmission. It served as a direct competitor to vehicles like the Audi S3 and BMW M235i/M240i, appealing to enthusiasts seeking a blend of luxury and performance.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLA |
| Generation | CLA Coupe (C118) |
| Type | AMG CLA 45 (387 Hp) 4MATIC+ AMG SPEEDSHIFT DCT 8G |
| Start of production | 2019 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption at Low speed (WLTP) | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel consumption at very high speed (WLTP) | 8.5 l/100 km (27.7 US mpg, 33.2 UK mpg, 11.8 km/l) |
| CO2 emissions (WLTP) | 186-194 g/km |
| Fuel consumption (economy) – urban | 10.3-10.4 l/100 km (22.8 – 22.6 US mpg, 27.4 – 27.2 UK mpg, 9.7 – 9.6 km/l) |
| Fuel consumption (economy) – extra urban | 6.9-7.0 l/100 km (34.1 – 33.6 US mpg, 40.9 – 40.4 UK mpg, 14.5 – 14.3 km/l) |
| Fuel consumption (economy) – combined | 8.1-8.2 l/100 km (29 – 28.7 US mpg, 34.9 – 34.4 UK mpg, 12.3 – 12.2 km/l) |
| CO2 emissions | 185-188 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.1 sec |
| Acceleration 0 – 62 mph | 4.1 sec |
| Acceleration 0 – 60 mph | 3.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d ISC-FCM |
| Weight-to-power ratio | 4.1 kg/Hp, 244.2 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 302.8 Nm/tonne |
| Power | 387 Hp @ 6500 rpm |
| Power per litre | 194.4 Hp/l |
| Torque | 480 Nm @ 4750-5000 rpm (354.03 lb.-ft. @ 4750-5000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | M 139 |
| Engine displacement | 1991 cm3 (121.5 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | CAMTRONIC |
| Kerb Weight | 1585 kg (3494.33 lbs.) |
| Max. weight | 2145 kg (4728.92 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 460 l (16.24 cu. ft.) |
| Fuel tank capacity | 51 l (13.47 US gal | 11.22 UK gal) |
| Permitted trailer load with brakes (12%) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4688 mm (184.57 in.) |
| Width | 1830 mm (72.05 in.) |
| Height | 1439 mm (56.65 in.) |
| Wheelbase | 2729 mm (107.44 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission AMG SPEEDSHIFT |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 350 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/40 R18 |
| Wheel rims size | 8.5J x 18 |
Powertrain & Engine Architecture
The heart of the CLA 45 AMG is the M139 2.0-liter inline-four cylinder engine. This engine is a significant departure from traditional four-cylinder designs, featuring a crankshaft rotated 180 degrees (“reverse rotation”) to reduce rotational inertia and improve responsiveness. It employs direct fuel injection operating at a maximum pressure of 270 bar, and a twin-scroll turbocharger producing up to 22.8 psi of boost. The CAMTRONIC variable valve timing system on both the intake and exhaust sides further optimizes engine performance and efficiency. The engine is paired with the AMG SPEEDSHIFT DCT 8G, an eight-speed dual-clutch transmission. This transmission offers incredibly fast shift times and allows for a variety of driving modes, including a manual mode for greater driver control. The 4MATIC+ all-wheel-drive system is also integral, featuring a multi-clutch system that can seamlessly distribute torque between the front and rear axles, and even individual wheels, for optimal traction.
Driving Characteristics
The CLA 45 AMG delivers a remarkably potent driving experience. The 387 horsepower and 354 lb-ft of torque, combined with the quick-shifting dual-clutch transmission and all-wheel-drive grip, result in a 0-60 mph time of around 3.9 seconds. The engine is highly responsive, with minimal turbo lag, providing strong acceleration throughout the rev range. The transmission’s gear ratios are tuned for both rapid acceleration and comfortable highway cruising. While the ride quality is firmer than standard CLA models due to the sport-tuned suspension, it remains reasonably compliant for everyday driving. Compared to lower-powered CLA variants, the 45 AMG offers a significantly more engaging and dynamic driving experience, prioritizing performance over fuel economy.
Equipment & Trim Levels
The CLA 45 AMG came standard with a comprehensive list of features, including AMG-specific styling elements (body kit, wheels, exhaust), a sport-tuned suspension, upgraded brakes, and a premium interior. Inside, drivers were greeted with sport seats upholstered in MB-Tex and Dinamica microfiber, an AMG steering wheel, and aluminum pedal covers. Standard technology included a 10.25-inch touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a suite of advanced driver-assistance systems. Optional extras included leather upholstery, a panoramic sunroof, a Burmester surround sound system, and advanced safety features like adaptive cruise control and lane-keeping assist.
Chassis & Braking
The CLA 45 AMG features a specifically tuned chassis to handle the increased power output. The suspension utilizes stiffer springs and dampers, along with a thicker stabilizer bar, to reduce body roll and improve handling precision. The braking system consists of ventilated discs at all four corners, with larger front rotors (350mm) and four-piston calipers for enhanced stopping power. The AMG-tuned steering provides precise and responsive feedback, contributing to the car’s overall agility.
Market Reception & Comparison
The CLA 45 AMG was generally well-received by automotive critics, who praised its performance, handling, and technology. However, some reviewers noted that the ride quality could be firm and that the interior, while well-equipped, lacked the ultimate luxury feel of some competitors. Compared to the standard CLA models, the 45 AMG offered a substantial performance upgrade, but at a higher price point and with slightly reduced fuel economy. Against rivals like the Audi S3 and BMW M235i/M240i, the CLA 45 AMG often stood out for its more powerful engine and advanced all-wheel-drive system.
Legacy
The M139 engine found in the CLA 45 AMG has proven to be a robust and reliable powertrain, although preventative maintenance, particularly oil changes, is crucial. The dual-clutch transmission, while offering exceptional performance, can require more frequent servicing than a traditional automatic. On the used car market, the CLA 45 AMG holds its value relatively well, appealing to enthusiasts seeking a high-performance compact coupe. Its combination of power, technology, and style continues to make it a desirable option in the used car segment.
