2015-2020 Mercedes-Benz GLA250 Fender: Aluminum Panels and Non-Reusable Moldings
This guide covers the specifics of replacing the aluminum fender on the X156 chassis GLA250, including part numbers, costs, and the critical need to replace the wheel arch moldings.
- The OEM fender is made of aluminum; avoid cheaper aftermarket steel replacements which can cause fitment and corrosion issues.
- The plastic wheel arch molding is not reusable; you must budget for a new one as the clips will break on removal.
- A used OEM fender offers the best value, providing factory fit and material, but must be inspected carefully for hidden damage.
- All replacement fenders, new or used, will require professional painting and blending to match your vehicle's finish.
Symptoms of a Damaged Fender
Since a fender is a body panel, failure is always visible. The most common reason for replacement is damage from a collision, rust, or other impacts. Symptoms are straightforward:
- Visible Dents and Dings: Minor to major depressions in the panel from impacts.
- Cracks or Tears: Severe impacts can cause the metal to crack or tear, creating sharp edges that can be a safety hazard.
- Scratches and Scuffs: Damage to the paint and primer, which can expose the aluminum panel to the elements.
- Rust or Corrosion: While the GLA250 fender is aluminum and won't rust like steel, it can still corrode, appearing as a white, powdery substance, especially if the paint is compromised.
- Poor Alignment: A bent or damaged fender may not line up correctly with the hood, bumper, or door, creating uneven gaps.
- Tire Rubbing: In cases of severe damage, the fender may be pushed inward and make contact with the tire, which is unsafe.
Known Issues for 2015-2020 GLA250 Fenders
Aluminum Construction
The front fenders on the 2015-2020 GLA250 (X156 chassis) are made of aluminum. This is important for several reasons. Aluminum is lighter than steel, which helps with fuel economy and vehicle balance. However, it is more difficult and expensive to repair than steel. Most body shops will opt to replace a damaged aluminum fender rather than attempt to repair it, as the material can be stretched and work-hardened easily. When buying a replacement, it's crucial to get an OEM aluminum part to maintain the vehicle's original weight and corrosion resistance.
Warning: Some aftermarket fenders for the GLA250 are made of steel. While cheaper, installing a steel fender can cause issues with fitment, weight balance, and may lead to galvanic corrosion where it meets the aluminum body structure.
Pro Tip: The plastic wheel arch molding (or flare) that attaches to the fender is a separate part. The clips that hold it in place are almost guaranteed to break during removal, and the molding itself can become brittle. Plan on purchasing a new wheel arch molding for a complete and professional installation.
Related Vehicle Recalls
While there are no specific recalls for the fenders, there is a significant safety recall for the body of this vehicle. NHTSA Recall 23V854 notes that on some 2014-2020 GLA-Class vehicles equipped with a panoramic sunroof, the front roof panel may not have been bonded correctly and could detach from the vehicle. It is wise to check with a Mercedes-Benz dealer to see if your vehicle is affected by this or any other open recalls.
Buying a Used Fender for Your GLA250: What to Check
A used OEM fender is often the best value, providing perfect factory fitment and the correct aluminum material at a lower cost than a new part. Here’s what to inspect before you buy:
- Verify Material: Confirm it is a genuine OEM aluminum part, not an aftermarket steel replacement. A magnet will not stick to the aluminum fender.
- Inspect for Hidden Damage: Look at the fender from all angles in good light. Check for subtle waves or ripples that indicate a previous, poor-quality repair. Pay close attention to the back side for signs of hammer marks or filler that has been pushed through.
- Check All Mounting Points: Carefully examine all the holes and tabs where the fender bolts to the chassis, A-pillar, and front bumper. Ensure none are cracked, broken, or elongated, as this will make proper alignment impossible.
- Look for Cracks: Stress cracks can form near mounting points or along sharp body lines after an impact. These can be hard to see but will ruin the panel.
- Assess the Paint: Don't just focus on the color. Look for paint that is flaking or bubbling, which could hide corrosion or a bad repair underneath. Unless the fender is from a vehicle with the exact same paint code and age, plan on having it professionally repainted to match your car.
Cost of Replacing a 2015-2020 GLA250 Fender
| Part/Service | Estimated Cost |
|---|---|
| New OEM Fender | $420 - $680 |
| New Aftermarket Fender | $160 - $280 |
| Used OEM Fender | $120 - $250 (plus shipping) |
| New OEM Wheel Arch Molding | $160 - $185 |
| Shop Labor (Fender Replacement) | $200 - $450 |
| Paint & Blending (per panel) | $300 - $600 |
Fender Replacement Overview
Replacing the fender on a GLA250 is moderately difficult. While it involves basic unbolting and bolting, achieving perfect alignment with the hood, door, and bumper requires patience and a good eye. The process generally involves removing the front wheel, the plastic wheel well liner, and the side skirt trim before accessing the fender bolts. Some bolts are located inside the door jamb and under the hood.
Critical Step: The wheel arch molding must be removed to access some fender fasteners. These moldings are attached with single-use clips and are often brittle. It is highly recommended to purchase a new molding (e.g., part number 156-885-23-22 for the front left) before starting the job.
Frequently Asked Questions (FAQ)
Is the 2015-2020 GLA250 fender made of steel or aluminum?
The original OEM front fenders are made of aluminum. This is important for weight and corrosion resistance. Be aware that some cheaper aftermarket replacements are made of steel.
Can I reuse my old wheel arch molding/flare?
It is highly unlikely. The plastic clips are designed for single use and will almost certainly break upon removal. The molding itself can also become brittle with age and crack. It is best practice to purchase a new molding when replacing the fender.
Do I need to paint a used fender?
Yes, in almost all cases. Even if you find a fender in the same color, factors like sun exposure and paint batch variations mean it will not be a perfect match. For a professional result, the replacement fender should be painted and blended into the adjacent panels (door and bumper) by a body shop.
Is the driver's side fender the same as the passenger's side?
No, they are not interchangeable. Fenders are side-specific. You must order a left (driver side) or right (passenger side) fender for your vehicle.
Technical Specifications
OEM Part Numbers: 1568800118 A1568800118 1568800218 A1568800218 A1568810101 A1568810201
Material: Aluminum
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Mercedes-Benz GLA250: