Is the 2018 Mercedes-Benz AMG C43 reliable?

The 2018 Mercedes-Benz AMG C43 has 18 complaints filed with NHTSA (1.2x the segment average). Our reliability verdict: average. Most common issue: OTHER problems.

What are common problems with the 2018 Mercedes-Benz AMG C43?

Top problems: OTHER (5 complaints, avg repair $500); WHEELS (4 complaints, avg repair $500); TRANSMISSION (2 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2018 Mercedes-Benz AMG C43?

Yes, there are 11 recall(s): STRUCTURE:BODY, ELECTRICAL SYSTEM:12V/24V/48V BATTERY, AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION, STRUCTURE:BODY:ROOF AND PILLARS, SEATS, ELECTRICAL SYSTEM:SOFTWARE, SEAT BELTS:FRONT:RETRACTOR, AIR BAGS:FRONTAL, SEATS, SEATS:FRONT ASSEMBLY:RECLINER, STRUCTURE:BODY:ROOF AND PILLARS. Contact any Mercedes-Benz dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2018 Mercedes-Benz AMG C43?

The 2018 Mercedes-Benz AMG C43 gets 23 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2087. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2018 Mercedes-Benz AMG C43?

Estimated US average full-coverage insurance for the 2018 Mercedes-Benz AMG C43 is approximately $2,143/year (sedan-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2018 Mercedes-Benz AMG C43

Problems, Recalls & Reliability Report

Average

Quick Summary

The 2018 Mercedes-Benz AMG C43 has 18 owner complaints filed with NHTSA — that's 1.2x the segment average of 15. The most common issue is other problems (28% of all complaints), specifically: i was told that the present recall had been repaired. you still have it as an open recall, without a present fix. how long does it take to remove a recall?. There are 11 recalls issued for this model year.

Total Complaints

Recalls Issued

—/5

Safety Stars

1.2x

vs Segment Avg

Known Problems(top 5 of 8)

OTHER

5 complaints

28%

• I WAS TOLD THAT THE PRESENT RECALL HAD BEEN REPAIRED. YOU STILL HAVE IT AS AN OPEN RECALL, WITHOUT A PRESENT FIX. HOW LONG DOES IT TAKE TO REMOVE A RECALL?
• The contact owns a 2018 Mercedes-Benz C43 AMG. The contact received notification of NHTSA Campaign Number: 21V058000 (Communication, Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time f
• Damaged cords on the soft top interior trim with the following characteristics: - Cord snapped - Cord worn - Cord torn out - Cord sheathing damaged Cause: Possible high tensile stresses on the cords during the soft top sequence

Typical onset: 50K miles Est. repair: $500

“I WAS TOLD THAT THE PRESENT RECALL HAD BEEN REPAIRED. YOU STILL HAVE IT AS AN OPEN RECALL, WITHOUT A PRESENT FIX. HOW LONG DOES IT TAKE TO REMOVE A RECALL?”

— NHTSA complaint filing

Recalls (11)

STRUCTURE:BODY10/07/2018

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2018 Mercedes C300 Cabriolet, C300 4Matic Cabriolet, C43 AMG Cabriolet, C63S AMG Cabriolet, and C63 AMG Cabriolet vehicles. Due to a bonding issue introduced in the production process, the rear beltline trim may separate from the vehicle.

Risk: If the beltline trim were to separate from the vehicle while driving, it could become a road hazard, increasing the risk of a crash.

Fix: MBUSA will notify owners, and dealers will inspect the rear beltline trim and replace the trim if necessary, free of charge. The recall began on September 21, 2018. Owners may contact MBUSA customer service at 1-800-367-6372.

Fuel Cost Calculator for 2018 Mercedes-Benz AMG C43

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,087

Per month

$174

Per mile

17.4¢

MPG

City driving (worst-case MPG)

$2,401/yr

Highway driving (best-case MPG)

$1,778/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2018 Mercedes-Benz AMG C43

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$2,143

Full coverage / month

$179

Liability only / year

$710

vs US avg

+28%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-luxury)1.28x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.00x

= Full coverage estimate$2143

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Mercedes-Benz AMG C43 Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

10K mi

Brake fluid

24 months

Transmission fluid

40K mi

Engine coolant

150K mi

Spark plugs

60K mi

Cabin air filter

20K mi

Engine air filter

40K mi

Differential (AWD/4WD)

40K mi

Service A / Service B alternating schedule. Requires MB-approved oil (229.5 spec typically).

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Mercedes-Benz New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

4 yr / 50K mi

Hybrid/EV battery

10 yr / 155K mi

Corrosion (rust perforation)

4 yr / 50K mi

Roadside assistance

4 yr / unlimited mi

EQ EV battery warranty is 10 years/155,000 miles

These are the terms for a new Mercedes-Benz. If you're buying a used 2018 AMG C43, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Mercedes-Benz dealer for VIN-specific remaining warranty.

Estimated Repair Costs

OTHER(~50K mi)

$500

WHEELS(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

TIRES(~50K mi)

$500

ENGINE(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 18 owner complaints for this specific year, here's what to check or ask about:

☐
OTHER: I WAS TOLD THAT THE PRESENT RECALL HAD BEEN REPAIRED. YOU STILL HAVE IT AS AN OPEN RECALL, WITHOUT A PRESENT FIX. HOW LONG DOES IT TAKE TO REMOVE A RECALL?
Typically appears around 50K miles. Repair cost ~$500
☐
WHEELS: I HAVE OWNED THE CAR FOR ABOUT 14 MONTHS AND DRIVEN JUST OVER 10,000 MILES DURING THAT TIME. I HAVE NOW HAD MY FIFTH FLAT OR DAMAGED FRONT TIRE SINCE OWNERSHIP OCCURRING ON BOTH DRIVER SIDE AND PASSENGER SIDE. THE DEALER REPLACES THE TIRE, WITH THE OEM REPLACEMENT, FIRST AT MY COST OF AROUND $400 E
Typically appears around 50K miles. Repair cost ~$500
☐
TRANSMISSION: NEW VEHICLE WITH UNDER 1000 TOTAL MILEAGE. INTERNAL PRESSURE CONTROL VALVE IN TRANSMISSION FAILED CAUSING MAJOR DAMAGE TO TRANSMISSION WITH METAL SHAVING FOUND IN TRANSMISSION PAN. TRANSMISSION AND FAULTY VALVE NEEDED TO BE REPLACED UNDER WARRANTY.
Typically appears around 50K miles. Repair cost ~$500
☐
TIRES: 2 BLOWOUTS, 1 TIRE SHREDDED, 1 VALVE STEM LEAK. BLOW OUT AT 11, 800 MILES.
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 11 recalls have been completed — free at any Mercedes-Benz dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)