2018 Mercedes-AMG C 43 Cabriolet Review, Ratings, Specs, and Price

AMG started as a garage setup which was involved with tuning stock Mercedes cars. Within a few decades, AMG became a name that is synonymous with speed. 2018 Mercedes-AMG C 43 Cabriolet receives the AMG treatment that makes the car faster, nimbler and intimidating to look at.

Beneath the beautifully sculpted exoskeleton, the AMG C 43 hides a galore of sophisticated technology. The engine pumps out an impressive 362 horsepower and 384 lb-ft. of torque. The suspension is tuned to provide better cornering ability. The exhaust is tuned to be more vocal and maximize road presence.

The Mercedes-AMG C43 has its share of the big-three rivalry. It competes with BMW 440i xDrive Convertible and Audi S5 Convertible. Priced at $ 61,795, the C 43 brings the AMG package closer to the masses.

What’ll Impress You

  • Great handling
  • Exterior styling is a head turner
  • Powerful and refined engine
  • Premium cabin 

What Won’t 

  • Infotainment system is confusing
  • Rear seats are merely decorative
  • Ride comfort is hampered due to stiff suspension

What’s New in 2018 Mercedes-AMG C 43 Cabriolet? 

  • Apple CarPlay and Android Auto are now available
  • Some options and stand-alone packages have been modified 

2018 Mercedes-AMG C 43 Cabriolet Trims and Features

The C 43 Convertible is only available in a single well-appointed trim. There are several optional packages that can be used to customize the ride as per one’s requirement. The pricing for the AMG C 43 Cabriolet starts at $61,795. With the soft top roof, the cabriolet model loses a bit of its performance in favor of ride experience.

Trim AMG C 43 2dr Cabriolet
MSRP $61,795


All-wheel-drive (AWD)

18 X 8.5 In. Wheels

245/40R18 Tires

Four-Wheel Independent Suspension

Front And Rear Stabilizer Bar

Head-Up Display

AMG Performance Seats

Burmester Surround Sound System

AMG Sport Exhaust System

ECO Start/Stop system




The C 43 comes with standard features such as power adjustable heated front seats, dual-zone climate control, AIRSCARF (neck-level heating) and AIRCAP (reduces wind buffeting when the roof has been lowered). There are different packages available that include features like LED lights, premium Burmester audio system and surround view camera system. 

We Recommend

 Mercedes AMG C 43 Cabriolet is available in a single trim only.

2018 Mercedes-AMG C 43 Cabriolet Power and Performance 

“If you want a sizable step up in power and acceleration for about $11,000 more than an equivalent C300 4Matic, the Mercedes-AMG C43 is your car. In addition to two more cylinders, this model’s turbo V6 adds 121 horsepower for a total of 362. That’s enough for a 4.6-second 0-60-mph time — enough to blow away many sports cars and certainly any typical – sedan.” – KelleyBlueBook 

Engine and Transmission 

The AMG C 43 Cabriolet is a departure from the C 300’s inline-four engine formula and slotted below the AMG special – 4.0 Liter V8 Biturbo engine. C 43’s 3.0 Liter V6 engine produces 362 hp at 5500 rpm. The engine’s responsive character is complemented by a snarly exhaust note which can be enrichened even further with the optional AMG Performance Exhaust System.

Beneath the red engine cover, the C 43 hides an arsenal of sophisticated AMG-patented technology that improves power and efficiency. This engine uses Rapid-multi spark ignition and high-pressure direct injection to maximize performance.

The C 43 is mated to a standard 9G-TRONIC transmission which is offered with paddle-shifters. In manual mode, the driver has complete authority over the transmission. Even at redline, the transmission doesn’t upshift until it gets an input from the driver. The available drive-modes alter the transmission response, severely. And depending upon the drive-mode it changes shift points to in favor of efficiency or it provides lighting fast gear-shifts for an engaging drive.

2018 Mercedes-AMG C 43 Cabriolet
2018 Mercedes-AMG C 43 Cabriolet Engine
Models 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
MSRP $61,795 $61,695 $63,275
Engine 3.0L V6 Biturbo 3.0L Inline 6 TwinPower Turbo 3.0L TFSI V6
Transmission 9-Speed Automatic 8-Speed Automatic 8-Speed Automatic
Horsepower 362 hp @ 5550 rpm 320 hp @ 5500 rpm 354 hp @ 5400 rpm
Torque 384 ft-lbs. @ 2000 rpm 330 ft-lbs. @ 1380 rpm 369 ft-lbs. @ 1370 rpm

The AMG C 43 holds its ground against the competition with its segment best – 362 hp output. Audi S5 produces 354 hp but it loses the crown by an 8 hp deficit. The BMW 440i manages to produce 320 hp from its turbocharged inline-six engine.


With its increased turbo boost, the AMG Biturbo V6 engine churns out a healthy dose of torque – 384 lb-ft. The entirety of this torque is available from 2000 to 4200 rpm. The AMG C 43 rushes to the 60 mph marker within 4.6 seconds. The quarter mile is achieved within 13.1 seconds.

The competition also uses a similar formula – six-cylinder 3.0 Liter displacement with and their version of turbocharging. Still, the AMG C 43 manages to extract the most power out of its 3.0 Liter displacement. 

Models 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
0-60 MPH 4.6 sec 4.4 sec 4.9 sec
Quarter mile 13.1 sec 13.2 sec 13.4 sec
Engine 3.0L V6 Biturbo 3.0L Inline 6 TwinPower Turbo 3.0L TFSI V6

(Tons/yr. of CO2 Emissions @ 15K mi/year)

8.0 7.4 7.0

The BMW 440i performs the quickest naught to 60 mph run which is achieved within 4.4 seconds. The C 43 loses to the 440i by a margin of 0.2 seconds. The Audi S5 is considerably slower than the former two by a margin of 0.5 seconds and 0.3 seconds respectively. 

Ride and Handling                                               

The in-house 4MATIC drivetrain has been developed to provide front/rear torque distribution, unlike any other all-wheel-drive system in the market. This system provides a 31:69 torque split that enhances handling under extreme driving scenarios.

The AMG Dynamic Select offers four drive modes – Comfort, Sport, Sport+ and individual mode. Each mode alters the driving dynamics of the car. Major changes are observed in throttle response, gear shifts, and suspension setting. With these drive modes, the C 43 can transition from a daily commuter and easily manage light track duty.

The C 43 also benefits from a lighter and more rigid suspension that adapts itself to a variety of terrains. The front axle has been tuned to be more track-focused while the steering profile increases negative camber to enhance stability while cornering at high speed.


The C 43 utilizes AMG Performance Braking System that performs well on track days but also inspires confidence in daily driving. The front rotors measure 14.2-inch while the rear measure 12.6-inch. The C 43 comes to a standstill from 60 mph within 114 ft.

Unlike conventional brakes, the AMG Performance brake discs are cast with holes in place. This method ensures that the brakes are structurally sound and more adept at coping with high heat during braking. To provide more control and precision while turning, the C 43 utilizes a Torque Vectoring Brake system that applies targeted rear wheel braking to compensate for understeer while cornering.

Model 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
Brake Front (in.) 14.2 13.4 13.8
Brake Rear (in.) 12.6 13.0 13.0
Curb Weight (lbs.) 4220 4328 4211
60-0 MPH (ft.) 114 113 110

The competition also manages to pull similar stopping distances. The Audi S5 takes only 110 ft. to come to a complete halt (from 60 mph to 0 mph) while the BMW does it within 113 ft. 

Fuel Economy 

The C 43 manages to deliver a modest combined mpg of 22. This is a respectable number considering the performance that is available on the tap of a pedal.

Model 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
MPG (city) 19 20 20
MPG (highway) 26 29 29
MPG (combined) 22 23 23

The AMG C 43 is equipped with a standard Eco Start/Stop system which switches off the engine when it detects a prolonged idle state. This system works at stop lights and when the driver lifts the foot off the brake pedal. The engine instantly restarts for a prompt response. The competition also pulls off frugal numbers, both Audi and BMW offer a combined mpg of 23 which betters C 43’s offering by a margin of 1 mpg. 

2018 Mercedes-AMG C 43 Cabriolet Exterior

“The LED lines over the headlights frame the front end nicely along with large low-set air intakes. The streamlined nose blends into slightly flared fenders, on back to the softly curved tail that’s strongly cued after the S-Class.” – TheCarConnection

Dimensions and Weight

The AMG C 43 Cabriolet flaunts a familiar sporty stance that is evident across the entire C Class lineup. But with the top up the C 43 loses the roofline-fluidity that is a premier feature of its coupe counterpart. The rear doesn’t bear any resemblance to other members of C-Class as it was designed specifically for the cabriolet. The cabriolet also sits lower than the rest of C-Class.

2018 Mercedes-AMG C43 Cabriolet
2018 Mercedes-AMG C43 Cabriolet exterior
Model 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
Curb weight (lbs.) 4220 4328 4211
Length(in) 184.9 182.7 184.7
Width(in) 71.3 71.9 72.7
Height(in) 55.4 55.1 53.9
Ground clearance (in) N/A 5.7 4.3
Wheelbase (in) 111.8 110.6 108.8
Track width (in) F/R 62.1/61.2 60.8/62.8 62.5/61.7

Dimensionally, the C 43 is longest and widest car in the segment at 184.9 inches and 55.4 inches respectively. Even the wheelbase is pretty generous at 111.8 inches. The competition also adheres to similar exterior dimensions.

2018 Mercedes-AMG C 43 Cabriolet Interior 

“The C-43’s interior impresses with a graceful center stack and simple layout afforded by minimal buttons, but it also complicates the interface some. Most other interior aspects are typical for a convertible, but we found the driving position and convertible top to be especially well done.”-Edmunds

 Seating and Comfort 

Prepared to be spoiled a little because the C 43 makes no compromise when it comes to luxury. Every touch point (surface) has been beautifully enamored with soft-touch material and leather. The use of wood, brushed metal and supple leather build up the ambiance of the cabin.

The powered top opens and closes within 20 seconds and can be operated at speed up to 30 mph. The C 43 Cabriolet is the jolly good car for those all day top down- wind the hair –rides.

2018 Mercedes-AMG C 43 Cabriolet
2018 Mercedes-AMG C 43 Cabriolet Interior
Model 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
Passenger capacity 4 4 4
Front (Head/Shoulder/Leg) (In.) 38.8/54.8/35.6 40.4/55.3/42.2 40.0/55.3/41.3
Rear  (Head/Shoulder/Leg) (In.) 35.6/51.7/32.0 37.1/49.8/33.1 36.3/46.9/33.1

This Merc is offered with a standard air scarf feature that gently blows warm air from the front headrests to the back of your neck and cushions you around a blanket.

The interior has been designed to complement the sporty exterior. The interior is lined up with red stitching that livens up the sporty demeanor. The sound insulation is pretty good for a cabriolet, and surprisingly comparable to the C 43 coupe. The AMG C 43 receives a unique flat-bottom steering. The seats are offered with 14-way power adjustable setting. This also includes an adjustment for lumbar, side bolstering and thigh extenders.


The primary display provides access to navigation, entertainment and comfort features. The menu can be accessed via an intuitive touchpad controller. A pair of screens behind the steering wheel display the vital information like vehicle’s settings.

2018 Mercedes-AMG C 43 Cabriolet
2018 Mercedes-AMG C 43 Cabriolet Infotainment

The audio department is handled by the duo of Burmester Surround Sound system and FrontBass system. The twin subwoofers from FrontBass are placed under the dashboard in the front frame of the car accumulating to a precise bass across the interior.

Interior Features 

  • Head-Up Display
  • Burmester Surround Sound System
  • AMG Performance Seats
  • Ventilated Front Seats
  • Air Balance Cabin Air Purification And Fragrance System
  • AMG Track Pace Application 

Cargo Capacity

With the top up, the AMG C 43 offers 8.8 cu-ft. of cargo space. The rear cargo space has been a tradeoff to accommodate the plumbing for the soft top. For the joy of open-air driving, one has to sacrifice a bit of practicality. Still, the C 43 provides decent space for hauling a couple of golf bags. 

2018 Mercedes-AMG C 43 Cabriolet
2018 Mercedes-AMG C 43 Cabriolet Trunk
Model 2018 Mercedes  AMG C 43 2dr Cabriolet 2018 BMW 440i xDrive 2dr Convertible 2018 Audi S5 Premium Plus Quattro 2dr Convertible
Cargo Volume (ft.3) 8.8 7.8 9.3

The Audi S5 Premium Plus provides the best in class cargo space of 9.3 cu-ft. while the BMW 440i only manages a 7.8 cu-ft. 

2018 Mercedes-AMG C 43 Cabriolet Reliability and Safety Ratings

The C Class Cabriolet hasn’t been crash-tested by NHTSA or IIHS, yet.

Safety Features

2018 Mercedes AMG C 43 Cabriolet is packed with a plethora of safety features. It offers Collision prevention assist plus, blind spot assist, pre-safe and 9 airbags.

  • ABS And Driveline Traction Control
  • Electronic Stability Control (ESC)
  • Side Impact Beams
  • Dual Stage Driver And Passenger Seat-Mounted Side Airbags
  • Collision Prevention Assist Plus Forward Collision
  • Mbrace Emergency SOS
  • Blind Spot Assist Blind Spot Sensor
  • Tire Specific Low Tire Pressure Warning
  • Dual Stage Driver And Passenger Front Airbags
  • Curtain 1st And 2nd Row Airbags

2018 Mercedes-AMG C 43 Cabriolet Head to Head Competition Check 

2018 BMW 440i xDrive 2dr Convertible

The Beemer uses a 3.0 Liter Inline-Six engine to produce 320 horsepower and 330 lb-ft. of torque. Although these figures are substantially lesser than AMG C C43. The BMW 440i manages to rush past the 60 mph mark within 4.4 seconds and the blazes past the quarter mile within 13.2 seconds.

Even with a weight disadvantage (BMW is the bulkiest vehicle in this segment), the Beemer actually beats the completion to the coveted 60 mph mark. It also scores well on the EPA emission tests (7.4 tons/year). The BMW 440i is a lucrative package at the price point of $61,695.

2018 Audi S5 Premium Plus Quattro 2dr Convertible

Audi S5 uses a 3.0 Liter TFSI V6 engine to produce 354 ponies and 369 lb-ft. of torque. These figures place the Audi right between the Merc and Beemer. But the specialty of this engine is its ability to produce maximum torque at a mere 1370 rpm. The Audi is brisk off the line but it fails to score impressively in the 0-60 mph and quarter mile tests (It is the slowest in this segment).

But the Audi redeems itself with best in class braking performance wherein it only required 110 ft to decelerate from 60 mph to a standstill. The Audi also offers a combined mpg of 23 and aces the EPA emission test with its 7.0 tons/year rating. Prices start north of $63,275.

Final Verdict for the 2018 Mercedes-AMG C 43 Cabriolet 

The AMG C 43 churns out a healthy dose of horsepower and torque – 362 hp and 384 lb.-ft. of torque. This V6 engine has a complementary soundtrack which can be further intensified with AMG Sport Exhaust System. Prices for this lifestyle car starts at $61,795.

AMG C 43 is for those willing to sacrifice back-seat or trunk volume for confident handling. Nonetheless, there are several good options available out there. For instance, BMW offers powerful performance with refined interiors. Moreover, the Audi A4 is chic inside, packed with several futuristic feats.

Mercedes- AMG C 43 is an outstanding convertible. On the features and interiors front, it is unmatchable. Putting it together with its solid safety and security ratings makes it a very credible choice.