Start by confirming which side you need (driver or passenger) and whether you want glass only or a full replacement for the mirror housing. Next, verify compatibility with your Jetta Mk5’s model year and housing shape, and decide between flat or convex glass for the best field of view. Consider features such as heating, auto-dimming, or integrated turn signals, and compare OE or aftermarket brands like VW OEM, Depo, Dorman, or CIPA to fit your budget.

Auto-dimming glass uses an electrochromic layer to reduce glare, especially at night. When choosing, check that the replacement includes the dimming sensor and wiring compatibility with the Mk5, since not all kits come with these parts. Heated glass provides defogging in cold weather but adds power draw and may require compatible wiring; verify compatibility with your model year and trim.

For a daily city driver, prioritize a simple, reliable replacement that fits the stock housing and keeps costs reasonable. For highway or long-distance driving, consider features like a wider field of view from convex glass and options such as heated or auto-dimming for comfort and safety. In both cases, ensure the glass matches your existing mirror housing and adjustability to maintain proper rearward visibility.

Keep the glass clean with a soft cloth and non-abrasive cleaners to preserve any coatings. When mounting, ensure the glass clips securely or the replacement includes hardware, and avoid forcing fit to prevent cracking. If your mirror is heated or auto-dimming, confirm the wiring and fuse compatibility to prevent electrical issues.

Measure the existing glass dimensions and compare the shape to standard flat or convex options. Check that the replacement glass aligns with your mirror housing's clipping method and offers the same field of view. When in doubt, choose OE-equivalent replacements from reputable brands to ensure proper fit and safe adjustment.

Look for OE or OEM-matching replacements from reputable brands to ensure compatibility with the Mk5. Popular aftermarket options include Depo, Dorman, and CIPA, which offer mirror glass that fits common Jetta housings. Check warranty details and ensure the selected glass includes the correct shape and any required heating or dimming features.