2017-2023 Tesla Model 3 Inner Fender Liner: Why They Sag, Rattle, and What to Buy

Symptoms of a Damaged Fender Liner

Because the fender liner is located right next to a spinning tire, problems often become obvious quickly. Look for these common signs of failure:

• Scraping, Rubbing, or Flapping Noises: This is the most common symptom. A loose or broken liner can make contact with the tire, especially during turns or at highway speeds, creating a scraping or rubbing sound. If a section has broken loose, it may create a loud flapping noise in the wind.
• Visible Sagging or Damage: A quick visual inspection can often reveal the problem. Look for cracks, holes, or tears. It's common to see the liner sagging or pulling away from the fender lip, sometimes due to missing clips or after driving in heavy rain or snow, which weighs down the material.
• Debris in Unusual Places: The liner is designed to keep the areas behind it clean. If you notice an unusual buildup of mud, leaves, or dirt on suspension components, it could mean your liner is cracked or has a section missing.

Known Issues for 2017-2023 Tesla Model 3 Liners

While generally doing their job, the fender liners on this generation of Model 3 have a few well-documented quirks.

Sagging Rear Fabric Liners

The soft, fibrous material used on the rear fender liners for sound deadening can absorb water in heavy rain or snow. The added weight can cause the liner to sag and, in some cases, contact the tire, creating a rubbing noise until it dries out. In winter conditions, packed snow and ice can add significant weight, potentially damaging the liner or adjacent trim pieces.

Missing Factory Clips

Many owners have reported their cars being delivered from the factory with missing push clips in the fender wells. This can cause the liner to be loose from the start, leading to rattles or sagging over time.

Material Differences and Road Noise

On many pre-'Highland' models, the rear wheel wells have a liner with a soft, sound-absorbing fabric layer, while the front liners are just hard plastic. This has led some owners to notice more road noise from the front and seek aftermarket kits to add sound-deadening material to the front wheel wells.

Buying a Used OEM Fender Liner: What to Inspect

Purchasing a used OEM (Original Equipment Manufacturer) fender liner is a smart way to save money, but a thorough inspection is key to getting a part that fits and functions correctly. A quality used part will fit perfectly and perform just like a new one.

Why Choose Used OEM Over New Aftermarket?

For a part like this, choosing a used OEM component is often a better choice than a new, cheap aftermarket one. OEM parts are guaranteed to fit precisely using the factory mounting points without modification. Aftermarket liners can be less expensive but are often made from thinner material and may not align perfectly, leading to gaps, rubbing, or installation headaches. Given the liner's role in noise reduction on a quiet EV, the superior sound-dampening material of the OEM rear liner and the guaranteed fit of all OEM liners are significant advantages.

Physical Inspection Checklist

• Check All Mounting Points: This is the most critical step. Carefully examine every hole where the liner attaches to the fender and chassis. If any are cracked, elongated, or broken, the liner will not sit securely and will likely rattle or rub.
• Look for Cracks and Tears: Inspect the entire surface, especially along the curved edges, for any cracks or holes. Even small damage can allow water and debris through, defeating the purpose of the part.
• Assess Material Condition: For rear liners, check the condition of the fabric-like sound-absorbing material. Ensure it is not rotted, excessively frayed, or saturated with oil. The plastic on front liners should be flexible, not brittle.
• Verify Part Number: If possible, double-check that the OEM part number on the liner matches what's required for your vehicle's year and position (e.g., Front Left, Rear Right).

Official Recalls and Service Bulletins

As of early 2026, there are no official recalls or Technical Service Bulletins (TSBs) from Tesla or the NHTSA that specifically relate to the inner fender liners on the 2017-2023 Model 3. While numerous recalls exist for this vehicle, they address issues like software, seat belts, and cameras, not the liners themselves.

Cost of a Tesla Model 3 Fender Liner (2017-2023)

Prices can vary based on condition and supplier. Here is a general cost comparison:

Replacement Overview

Replacing a fender liner on a Model 3 is a straightforward job that most DIYers can handle with basic tools. The process generally involves jacking up the car safely, removing the wheel, and then removing a series of plastic push clips and 10mm bolts that hold the liner in place. The new liner is then installed in the reverse order. 🎬 See this step-by-step fender liner removal and installation guide Some owners have noted that you can sometimes get enough access by turning the steering wheel, but removing the wheel makes the job much easier.

Part Number and Compatibility Guide

Part numbers for Tesla can have several revisions (ending in -B, -C, -D, etc.). The numbers listed here are known to fit the 2017-2023 Model 3. Always confirm the part number and vehicle year before purchasing.

Frequently Asked Questions (FAQ)