The plastic cover next to the tyre is damaged

From a mechanic’s perspective, a damaged wheel arch liner isn’t urgent but shouldn’t be ignored. It shields critical components like brake lines and suspension parts from mud and salt. Temporary fixes include duct tape for small tears, but a proper repair or replacement is best. For common cars like the Nissan Leaf, liners are affordable and easy to fit.

1. If it's severely broken, you'll have to replace it with a new one.
2. For minor damage, you can wipe it with engine oil to make the cracks less visible. Alternatively, use car polishing wax to buff it out.

The plastic cover next to the tyre, often called the wheel arch liner or fender liner, protects the wheel well from debris and reduces road noise. If damaged, it should be repaired or replaced to prevent further issues like rust, water ingress, or damage to electrical components. Here’s what to do:

1. Assess the damage: Minor cracks can often be repaired with plastic welding or epoxy, while severe damage may require a replacement.
2. Source the part: Check with your car’s manufacturer or a reputable breaker’s yard for an exact match. Popular models like the Ford Focus or Vauxhall Corsa often have readily available parts.
3. Fit the replacement: If DIY, ensure the liner is securely fastened with clips or screws. For complex fits, a mechanic can ensure proper alignment.

Ignoring the issue risks corrosion, especially in wet conditions. A damaged liner can also expose wiring or suspension components to road grit. Costs vary—used liners start around £20, while new OEM parts may exceed £100.