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2025 Mercedes-Benz

AMG SL55 4matic Plus

Auto 9-spd, 8 cyl, 4.0 L, Turbo

Mercedes-Benz AMG SL55: best and worst years

Overview

Body
Minicompact CarsEPA, from EPA, last updated 6/22/2026
Drivetrain
All-Wheel DriveEPA, from EPA, last updated 6/22/2026
Transmission
Automatic 9-spdEPA, from EPA, last updated 6/22/2026
Powertrain
GasEPA, from EPA, last updated 6/22/2026
Fuel
PremiumEPA, from EPA, last updated 6/22/2026

Engine & performance

Cyl
8EPA, from EPA, last updated 6/22/2026
Aspiration
TurbochargedEPA, from EPA, last updated 6/22/2026
Start-stop system
YesEPA, from EPA, last updated 6/22/2026

Efficiency

MPG Hwy
21 mpgEPA, from EPA, last updated 6/22/2026
MPG City
13 mpgEPA, from EPA, last updated 6/22/2026
MPG Comb
16 mpgEPA, from EPA, last updated 6/22/2026
Fuel $/yr
$4,800EPA, from EPA, last updated 6/22/2026
CO₂
558 g/miEPA, from EPA, last updated 6/22/2026
Eco Score
3/10EPA, from EPA, last updated 6/22/2026
Smog score
4/10
Elec. Range
0 miEPA, from EPA, last updated 6/22/2026
SmartWay certified
No

Safety NHTSA, model year

Recalls
0
Owner complaints
0

Feature availability

Comfort

  • Heated seatsStandard
  • Heated steering wheelUnconfirmedPackage only
  • Leather seatsStandard
  • Massaging seatsPackage only
  • Memory seatStandard
  • Ventilated seatsPackage only

Audio

  • Burmester audioUnconfirmedPackage only
  • Premium audio (any brand)UnconfirmedStandard

Cameras & visibility

  • 360 surround-view cameraPackage only
  • Backup cameraStandard
  • Head-up displayPackage only
  • Parking sensorsStandard

Driver assist

  • Adaptive cruise controlPackage only
  • Automatic emergency brakingStandard
  • Blind-spot monitorStandard
  • Lane-keeping assistUnconfirmedPackage only

Convenience

  • Android AutoStandard
  • Apple CarPlayStandard
  • Keyless entryStandard
  • Navigation systemStandard
  • Push-button startStandard
  • Remote startUnconfirmedStandard
  • Wireless Apple CarPlayStandard
  • Wireless phone chargingStandard

Exterior

  • Adaptive headlightsStandard

Known issues manufacturer service bulletins, model year

23 service bulletins filed with NHTSA for this model year

  • May 29, 2026ELECTRICAL SYSTEMLI00.20-P-077615

    Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The service display in the instrument cluster permanently displays 365 days (remaining time) and does not change. Cause Routine change in the software in N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head u

  • May 20, 2026ELECTRICAL SYSTEMLI54.10-P-080602

    Complaint 48V battery (A66) part numbers A 000 982 78 24, A 000 982 57 30, A 000 982 88 31, A 000 982 50 32, A 000 982 87 32) may trigger a fault message ("48 V Service Required" with fault codes P0ADA91, P0ADE91, P0AA100, P0ADD00 or P0AA000) in the instrument cluster. This fault message may prevent the 48 V battery contactors from opening automatically if the 12 V power supply is interrupted. In this case, the 48 V on-board electrical system, including connected components, remain energized. Ca

  • May 19, 2026VISIBILITY/WIPERLI82.30-P-059239

    Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement water is pulled back onto the windshield from the A-pillar (Figure 1) D: After windshield cleaning, water keeps spraying onto the windshield for several wipe cycles (Figure 2) A1: The windshield and wiper blades are contaminated with residues from car washing

  • May 15, 2026SUSPENSIONPSL-NCU Return Parts 5/15

    The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, June 4, 2026. After June 4th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your retu

  • May 15, 2026WHEELSLI40.10-P-061032

    Complaint Noises at the front axle when cornering or maneuvering (video files attached) Note: Save video files locally and play them with Windows Media Player. Cause Driving with summer tires in combination with low outside temperatures. At low outside temperatures or in wet conditions, a noise may be produced at the outer wheel on the front axle while maneuvering with sharp steering angles. Note: AMG vehicles with 4MATIC of model series 217 (without code 494) and model series 222 have a modifie

  • May 12, 2026BACK OVER PREVENTION: WARNINGSLI54.65-P-080132

    Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

  • May 12, 2026SUSPENSIONLI33.20-P-078406

    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comparison. MUST match noise for proper diagnosis. NOTE: Steering functionality is not affected. Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Throttle Lift-Off Noise - Rear) LI33.30-P-056665 (Throttle

  • May 9, 2026STRUCTURE:BODYOTA - Update Trunk Lid CU

    Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the control unit software for the trunk lid control does not correspond to the current series status. The new software update stabilizes the automatic trunk lid opening height when automatically opened. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

  • and 15 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr / 50k mi
EV battery
10 yr / 155k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.