This DAS Motor product guide reviews the Mercedes-Benz W118 / C118 CLA FDGT Carbon Rear Diffuser, a rear diffuser associated with W118 / C118 CLA [replacement, for both CLA45 and Non-CLA45]. It focuses on compatibility, carbon construction, fitting requirements, availability and purchase preparation.
Mercedes-Benz W118 / C118 CLA FDGT Carbon Rear Diffuser overview
A rear diffuser replaces or overlays the lower bumper area to give the rear view a deeper and more technical appearance. Fin depth, exhaust-outlet spacing and the relationship to the bumper reflectors define the finished look.
The C118 CLA Coupe and X118 Shooting Brake share a design language but differ around the roof and rear bodywork. CLA45, AMG Line and standard bumpers can also require different aerodynamic pieces.
The FDGT designation identifies the visual variant of this product. It should be compared directly with the regular FD version, particularly around projection, corner treatment and the way it connects with adjacent bumper or sill lines.
Specifications and Mercedes-Benz application
- Vehicle application: W118 / C118 CLA [replacement, for both CLA45 and Non-CLA45]
- Model years: 2019-now
- Product type: Rear Diffuser
- Style: FDGT
- Material: Dry carbon / Vacuum Infusion
- Installation: Add on / drilling screw & bolt
Compatibility and fitment for W118 / C118 CLA [replacement, for both CLA45 and Non-CLA45]
Compare exhaust configuration, parking sensors, tow equipment and bumper trim before assuming compatibility. The body style and factory exterior package should match the product photographs at every mounting edge.
Before ordering for a vehicle from 2019-now, compare close photographs of both mounting edges. Badge names often continue across styling revisions, while the bumper or boot-lid geometry changes underneath.
Installation requirements
The stated method is Add on / drilling screw & bolt. Mark and test-fit every mounting point before drilling, protect exposed holes against corrosion where applicable and tighten fasteners evenly rather than pulling an inaccurate part into position.
A diffuser often uses a mixture of factory clips, screws and additional fasteners; the bumper should be supported during trial fitting. Use masking tape reference marks during the dry fit so the final position can be reproduced after cleaning the mounting surface.
Material, finish and delivery inspection
The listing identifies Dry carbon / Vacuum Infusion construction. For this type of composite part, low weight is useful, but the practical quality checks are consistent weave direction, an even clear coat, clean edges and mounting surfaces that are not distorted.
Place the uninstalled part on a padded surface and compare left and right sides. Uneven curvature, twisted mounting flanges or blocked holes should be resolved before the vehicle is dismantled.
Price, availability and ordering in 2027
DAS Motor can help confirm current price and availability for the exact Mercedes-Benz application. Request a fitment check with the chassis code, model year, body style and clear photographs of the mounting area before purchase.
Do not assume that parts carrying similar FD, FDGT, GT or AMG-style names are interchangeable. These labels describe appearance; the mounting shape must still correspond to the exact vehicle and bumper.
Inspect the lowest fins and exhaust-adjacent areas for impact damage, heat exposure and loose fixings. Seasonal temperature changes are a useful time to inspect bonded joints, particularly where composite and painted metal expand at different rates.
Mercedes part pre-order checklist
- Compare product and vehicle photographs at the same angle.
- Confirm year range against the build date.
- Identify any previous bumper or body repair.
- Check whether factory clips can be reused.
- Budget for preparation and installation materials.
- Verify the seller's policy before drilling or bonding.
Mercedes-Benz W118 / C118 CLA FDGT Carbon Rear Diffuser FAQ
Does this rear diffuser fit every W118 / C118 CLA [replacement, for both CLA45 and Non-CLA45]?
No. Confirm the chassis code, body style, production date, bumper package and mounting geometry. A shared sales name does not guarantee identical exterior panels.
What should be checked before ordering in 2027?
Verify current stock, price, delivery terms, included hardware, material specification and the seller's fitment evidence for the exact VIN or vehicle configuration.
Is professional installation recommended?
Yes. A specialist should dry-fit the component, check symmetry and clearance, and confirm the correct adhesive or mechanical fasteners before any permanent modification.
Related Mercedes-Benz styling guides
- Mercedes-Benz W118 / C118 CLA45 FDGT Carbon Front Lip
- Mercedes-Benz W118 / C118 CLA45 FD Carbon Front Lip
- Mercedes-Benz W118 / C118 CLA Shooting Brake FD style Carbon Trunk Spoiler
- Mercedes-Benz W118 / C118 CLA FDGT Carbon Front Lip
Browse the complete Popular Mercedes Products cluster for Mercedes-Benz carbon parts, exterior accessories, fitment guides and 2027 buying references.
Product specification and photography reference: original product listing. Availability and specifications may change; confirm current details before ordering.
