2010-2011 Honda Insight Rear Spoiler: High-Mount Lamp Failure and Replacement Guide
A complete guide to diagnosing, replacing, and finding a quality used rear spoiler and high-mount brake light for your second-generation Honda Insight.
- The most common failure is the sealed high-mount LED brake light, which is extremely expensive to replace new from the dealer ($480+).
- When buying used, always find a spoiler that matches your car's factory color code to avoid a costly repaint.
- The infamous foggy/cracked lower rear window is a separate part and not included with the upper spoiler assembly.
- Replacement is a simple DIY job for most, requiring basic tools and about 90 minutes.
Symptoms of a Failing Rear Spoiler
Failure of the rear spoiler assembly on a 2010-2011 Honda Insight typically involves either the spoiler body itself or the integrated high-mount brake light. Here are the most common symptoms:
- Failed High-Mount Stop Lamp: The most frequent issue is the failure of the LED center brake light. This is a safety concern and can get you a ticket. The entire lamp assembly must be replaced as the LEDs are not individually serviceable.
- Rattling or Looseness: The plastic mounting points for the spoiler can become brittle and break over time, causing the spoiler to feel loose or rattle 🎬 Watch this video on fixing a loose Honda Insight spoiler, especially when closing the hatch or driving over bumps.
- Paint and Clear Coat Failure: Like any exterior painted part, the spoiler is susceptible to sun damage. This can appear as fading, peeling clear coat, or a chalky, oxidized finish.
- Cracks and Physical Damage: Impacts from road debris or minor accidents can cause the plastic spoiler body to crack or break. Pay close attention to the areas around the mounting bolts.
- Water Leaks: A damaged spoiler or degraded mounting seals can potentially allow water to leak into the tailgate assembly, which can damage other components.
Important Note on the Lower Window: Many owners experience severe visibility problems due to the lower polycarbonate window panel on the hatch becoming foggy, crazed, or cracked. This is a very common issue but is a separate part from the upper spoiler assembly discussed here. If your lower window is the problem, you will need to replace that specific panel (Part number for the lower glass is often found under categories for back glass, not spoilers).
Buying a Used 2010-2011 Insight Spoiler
Purchasing a used OEM spoiler is often the most cost-effective solution. Because these parts are frequently pre-painted, a little diligence can save you hundreds of dollars on paint and bodywork. Here’s what to check:
- Verify Your Color Code: The most important step is to find a spoiler that already matches your car. Locate the vehicle information sticker on the driver's side door jamb. The exterior color code is printed on this sticker. Providing this code to the seller ensures a perfect match.
- Inspect the Paint Finish: Carefully examine photos or inspect the part in person for signs of clear coat peeling, deep scratches, or significant fading. Minor scuffs can often be polished out, but major paint failure will require a full repaint.
- Check for Structural Integrity: Look for any cracks in the plastic, especially around the mounting points where bolts pass through. Forum users report these areas can break, leading to a loose-fitting spoiler.
- Confirm the High-Mount Lamp is Included: The spoiler (garnish) and the high-mount lamp are technically separate parts. Many used assemblies will include the lamp, but always confirm with the seller. If it's not included or is known to be broken, factor in the cost of a new lamp.
- Ask About the Mounting Hardware: While you can reuse your old nuts and bolts, it's helpful if the used part comes with its hardware, just in case any of yours are lost or damaged during removal.
Known Issues, Recalls, and TSBs
As of mid-2026, there are no specific recalls or Technical Service Bulletins (TSBs) from Honda for the upper rear spoiler or high-mount stop lamp on the 2010-2011 Insight. The most widely reported issues are related to the separate lower rear window panel degrading and general complaints about the IMA hybrid system. There are no widespread factory defects associated with the spoiler itself, with most failures being due to age, sun exposure, or physical damage.
Cost Comparison
Prices can vary based on supplier and condition. The high cost of a new high-mount lamp makes a good-condition used assembly a very attractive option.
| Part | Price Range | Notes |
|---|---|---|
| New OEM Spoiler (Garnish) | $220 - $400 | Usually comes unpainted or primed. Part number 74900-TM8-A01. |
| New OEM High-Mount Lamp | $480 - $725+ | A surprisingly expensive part. Part number 34270-TM8-013. |
| New Aftermarket | $50 - $150 (Lamp Only) | Aftermarket options for the spoiler body are rare, but lamps are available. Quality may vary. |
| Used OEM (Complete Assembly) | $100 - $250 | Best value, especially if color-matched and the lamp is working. |
| Shop Labor (Replacement) | $100 - $175 | Typically 1.0-1.5 hours of labor. |
Replacement Overview
Pro Tip: Before starting, have a set of plastic trim removal tools handy. Using a screwdriver can easily scratch or damage the interior panels of the tailgate.
Replacing the rear spoiler is a straightforward job that most DIY mechanics can handle.
- Difficulty: 2 out of 5
- Estimated Time: 1 - 1.5 hours
- Tools Required: 10mm socket, T30 Torx bit, Phillips screwdriver, plastic trim removal tools.
Step-by-Step Summary:
- Open the rear hatch.
- Remove the upper interior plastic trim panel from the tailgate. It is held by several clips.
- Remove the rear wiper motor cover (three 10mm bolts and four Phillips screws).
- Locate and disconnect the electrical connector for the high-mount brake light.
- Remove the two T30 Torx bolts on the left and right sides of the hatch corners.
- Remove the central 10mm nut that secures the middle of the spoiler.
- Carefully lift the spoiler assembly off the tailgate. Be mindful of any remaining clips.
- If swapping the old brake light into the new spoiler, remove the two Phillips screws holding it in place.
- Installation is the reverse of removal. Hand-tighten all nuts and bolts before torquing them down to ensure proper alignment.
Frequently Asked Questions
Is the foggy lower window part of the rear spoiler?
No, the lower polycarbonate window that often becomes foggy or cracked is a completely separate part from the upper painted spoiler and high-mount light assembly.
Can I just replace the bulb in the high-mount brake light?
No, the high-mount stop lamp is a sealed LED unit. If the light fails, the entire lamp assembly (part 34270-TM8-013) must be replaced.
Do I need to get a used spoiler painted?
You can avoid the cost of painting by finding a used spoiler that matches your car's factory color code, which is located on the driver's door jamb sticker. If you buy a primed or different colored spoiler, a body shop will need to paint it to match, which can cost several hundred dollars.
Will a spoiler from a 2012-2014 Insight fit my 2010 model?
No, the part numbers and fitment are specific to the 2010-2011 model years. While they look similar, later models may have different mounting points or shapes.
Helpful Videos
Technical Specifications
OEM Part Numbers: 74900-TM8-A01 (Spoiler Garnish) 34270-TM8-003 (High-Mount Lamp) 34270-TM8-013 (High-Mount Lamp, supersedes -003)
The spoiler assembly is secured by two T30 Torx bolts and one central 10mm nut, in addition to several clips.
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.
- Honda Insight: