Foggy, yellowed headlights can fail a Warrant of Fitness in Wellington because hazy lenses cut your light output, and headlight restoration fixes that for a fraction of the cost of new units. We restore most sets in about an hour from $105 + GST, no new parts needed. If your beams look dim on the drive home through the Terrace Tunnel, cloudy lenses are usually why.
Key takeaways
- Cloudy or yellowed headlights can fail your WOF on reduced light output.
- Restoration sands back and reseals the existing lens instead of replacing it.
- Most sets are done in around an hour, from $105 + GST.
- New OEM headlight units can run hundreds of dollars each, so restoration is the cheaper first move.
- We offer mobile headlight restoration and in-studio work across Wellington.
Can foggy headlights fail a WOF in Wellington?
Yes. A Wellington WOF inspection checks that your headlights produce enough clean light and a proper beam pattern. When the lens hazes over, it scatters and blocks the light before it reaches the road, so the beam goes dim and diffuse. Inspectors can and do fail cars for this. The NZTA Warrant of Fitness rules cover lighting condition, and a headlight that has gone milky is an easy thing for a tester to flag.
Even if a foggy set scrapes through this year, it will keep getting worse. Wellington nights are dark and wet for a good chunk of winter, and a weak beam on a rain-slicked road out to Karori or over the hill to Johnsonville is a safety problem well before it is a compliance one.
Why do headlights go cloudy in the first place?
Modern headlight lenses are polycarbonate plastic, not glass. From the factory they carry a thin protective coating, but that coating breaks down over time. The main culprit is UV. New Zealand runs a high UV index thanks to our thin ozone layer, and years of sun slowly oxidise the plastic surface. That oxidation is the yellow, chalky haze you can see and feel.
Wellington adds its own wear on top. Salt air off the harbour, sea spray around Seatoun and Island Bay, and the grit that the southerlies fling at your car all sandblast and pit the lens surface. Once the factory coating is gone, the bare plastic degrades faster. That is why a car parked outside in Miramar or Petone often shows worse fogging than one that lives in a garage.
What is the difference between restoration and replacement?
Restoration works with the lens you already have. We machine-sand the oxidised layer back through progressively finer grits, polish the plastic clear, then seal it with a fresh UV-resistant coat so it stays clear. Replacement means buying and fitting a whole new headlight assembly, which on many models is a several-hundred-dollar part before labour, and sometimes needs the bumper off to fit.
For the vast majority of hazy headlights, restoration is the sensible first step. It is faster, far cheaper, and it keeps your original units.
| Headlight restoration | Full replacement | |
|---|---|---|
| What happens | Sand, polish and reseal the existing lens | Fit a brand-new headlight assembly |
| Typical cost | From $105 + GST (both lenses) | Often several hundred dollars per unit, plus fitting |
| Time | Around 1 hour | Longer, may need panel or bumper removal |
| Best for | Fogged, yellowed or hazy lenses | Cracked housings, broken mounts, water inside the unit |
| Keeps original parts | Yes | No |
If a lens is cracked, the housing is broken, or there is water sitting inside the unit, restoration will not fix that and replacement is the right call. For ordinary cloudiness, restoration is what you want.
How much does headlight restoration cost, and how long does it take?
Headlight restoration with us starts from $105 + GST for a set, and most cars are done in about an hour. That covers the sanding, polishing and resealing described above. It is one of the quickest, best-value jobs we do, which is why it is a popular add-on to a full detail or a pre-sale tidy-up. You can see it alongside our other extras and package pricing on the Wellington detailing pricing page.
Because pricing steps up a little with vehicle size and how badly the lenses have gone, the starting figure is a “from” price. We will confirm the exact number when we see the car or through a free estimate.
Do you do mobile headlight restoration in Wellington?
We work across Wellington, from Thorndon and Newtown through to Kilbirnie, Lower Hutt and out to the coastal suburbs, with mobile headlight restoration available so we can come to you. If it is easier to bring the car in, we also handle it in the studio. Either way the process and the result are the same: clear lenses and a proper beam again. Full details are on our dedicated headlight restoration page.
Headlight restoration also pairs naturally with the rest of a service. If your car is due a WOF and looking tired, it is worth combining the lenses with an exterior detail from $105 + GST or one of our full detailing packages so it presents well and is protected against the salt and sun that caused the problem in the first place.
Frequently asked questions
Will restored headlights fog up again?
Not for a good while, as long as they are resealed properly. The fresh UV coat is what protects the bare plastic. Skipping that seal is why cheap kits and DIY jobs often go cloudy again within months. We finish with a proper protective coat so the clarity lasts.
Can you fix headlights that are already failing a WOF?
Usually yes, if the lens is simply hazy or yellowed. Restoring the clarity restores the light output, which is what the WOF is measuring. If the unit is cracked or has water inside it, that is a replacement job, not a restoration one.
How long does headlight restoration take?
About an hour for most cars. Heavily oxidised or larger lenses can take a little longer, but it is a same-visit job either side of that.
Is it worth restoring headlights before selling my car?
Definitely. Clear headlights make a car look years younger and are one of the cheapest ways to lift how it presents to a buyer. From $105 + GST it is an easy win before a sale or a WOF check.
Do you cover the Hutt Valley and coastal suburbs?
Yes. We service Wellington broadly, including Lower Hutt, Petone and the harbour-side suburbs where salt air is hardest on lenses. Mobile restoration means we can reach most of the region.
Book your foggy headlights in before your next WOF and drive home with proper beams again. Grab a free estimate or lock in a slot through our headlight restoration page, and we will have your lenses clear in about an hour.