Mazda 3 - Awful headlights - CheerfulChuck

Hi all,

Would appreciate if anybody has met with this issue before, the headlights on this Mazda 3 are unusable due to extremely dull light. Bulbs have been changed, the outside of the headlight has been polished, and have been advised it may be an aged projector lens.... It does look frosted when the lights are on, however they both do and quite uniformly, so my question at the moment is whether they could be actually supposed to be frosted? If they should be clear obviously new headlights units should solve the issue but it's a huge cost without being sure of the problem.

Photos here:

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Many thanks for any thoughts

Mazda 3 - Awful headlights - elekie&a/c doctor
Projector headlights are generally very poor compared to conventional reflector types . The lenses are not clear , you can’t see the bulb from the front . I’ve had them on an x type jaguar and a corsa C . Both were very poor . Not sure if new lights would improve the situation. Not sure if these were ever fitted with xenon or led lights .
Mazda 3 - Awful headlights - CheerfulChuck

Thanks for your reply - no xenon/led lights have been used that I know of. It's so poor I am considering getting rid of the car as they are not functional, sad as I enjoy the car otherwise.

Mazda 3 - Awful headlights - mord

That does seem a little like throwing the baby out with the bathwater, its perhaps worth trying some better bulbs than the 50p specials one finds in the local petrol station.

Ive had good results with Osram Nightbreakers and Philips Xtremevision bulbs before (the Phillps I found to have a longer life than the Osrams). Can usually pick these up for around £20 a pair.

Could also try led replacements as these tend to work well with projector lenses, retaining a good beam cutoff pattern. They're, ahem, technically not road legal, but its unlikely anyone would ever notice.

What year/model is your car so that we know what bulb types it needs?

Mazda 3 - Awful headlights - CheerfulChuck

Sadly upgrading the bulbs hasn't made much difference :( would rather stay road legal (though honestly these shouldn't be!)

Edited by CheerfulChuck on 18/09/2025 at 19:47

Mazda 3 - Awful headlights - Adampr

They shouldn't be all milky like that. The lenses have oxidised. What year is it? Have you looked for someone that might be able to refurb them or thought about having a go yourself?

Mazda 3 - Awful headlights - Brit_in_Germany

If you can't see the bulb from the front, an MOT tester will not be able to see if the bulbs are replaced with LED elements.

Mazda 3 - Awful headlights - bathtub tom

If you can't see the bulb from the front, an MOT tester will not be able to see if the bulbs are replaced with LED elements.

I'd suspect an MOT tester could distinguish LEDs from halogen easily by the colour of the light. I certainly can.

Mazda 3 - Awful headlights - Brit_in_Germany

There are LEDs and LEDs. Osram, for example, have a warm-white version with a 3,000K colour.

Mazda 3 - Awful headlights - focussed
"I’ve had them on an x type jaguar and a corsa C"
Wow - a Corsa c.!!
Mazda 3 - Awful headlights - Big John

Over my driving career I've had generally had poor experience of projector headlights with standard halogen bulbs.

Mrs BJ's 1999 FIat Punto with projector headlights owned from 3 years old were always pretty awful. I can't remember the bulb type.

My Skoda Superb mkI owned from 18 months old were also always pretty bad. Projector lens units H7 halogen bulbs and I tried brighter bulbs(Osram Silverstar) that made a slight improvement but still not great, Bulb life then became poor which was a pain as it was a difficult job to replace bulbs. Later in life they also needed the plastic front polishing.

My Skoda Superb mkII owned from 14 months old also with projector lens units H7 bulbs were ok to be honest.

The point I'm trying to make is the headlights may have always been poor. Some implementations are poorer than others.

PS measure the voltage at the bulb to double check electrical things on the way eg relay contacts/wiring.

Edited by Big John on 18/09/2025 at 22:21

Mazda 3 - Awful headlights - RT

On the two cars I've had with projector headlights, Subaru Outback and Hyundai Santa Fe, I've fitted high powered halogen bulbs, legal E-marked, and performance has been fine with well defined cut-off.

Mazda 3 - Awful headlights - gordonbennet

Does the car have proper fog lights fitted, ie directly underneath the hopeless headlights.

Much as one shouldn't i'd be inclined to stick uprated halogen bulbs in the fog lights and in unlit areas use them to subsidise the headights, but make sure they're set at a sensible angle so not to cause issues, given the myriad patterns of lights now fitted to cars the chances of the bill having a go at you for using them in ordinarly conditions are virtually nil.

Regarding the healdights, as said above there's r****** LEDs in H4/H7 from the usual sources and the likes made by Philips and Osram, which can be well over £100 a pair, the quality ones have light pattern definition every bit as good as halogen bulbs.

One final thing, are the beams correctly set, i've seen some set so poorly might as well have had a couple of 1960s ever ready bicycle torches powered by U2s taped to the front.

Mazda 3 - Awful headlights - focussed
When I moved to France in 2009 I had to replace the headlight units on our L200 pickup with dip to the right units for driving on the right.
A local brit-run garage supplied a pair of Depo aftermarket units, made in Korea, together with some uprated tungsten bulbs they were the best headlamp set up on any car I've ever had, you could see for miles on a country road at night here when it's really black out conditions - no street lamps !

EG -www.eurocarparts.com/p/depo-headlamp-471820241
Mazda 3 - Awful headlights - gordonbennet
When I moved to France in 2009 I had to replace the headlight units on our L200 pickup with dip to the right units for driving on the right. A local brit-run garage supplied a pair of Depo aftermarket units, made in Korea, together with some uprated tungsten bulbs they were the best headlamp set up on any car I've ever had, you could see for miles on a country road at night here when it's really black out conditions - no street lamps ! EG -www.eurocarparts.com/p/depo-headlamp-471820241

Those Depo aftermarket units are sometimes fitted to 120 Series (there will be others needing them) Landcruisers by switched on owners, seldom see a derogatory remark about them, indeed lasting at least as long as the OE units, OEs need regular buffing after about 12 years due to sun damage but in the end the crazing gets too deep in the lens to polish out, they Depo units also have the correct fittings to accept the electric motors from the OE units, keeping the ability to alter beam height from a dash switch.

Dedicated switch for headlight aim that is not hidden in some sub menu in a hideous digi screen only visible if you have the vision and computer knack of a child, i've spent the last week enjoying the, er, benefits of digi dashboards whilst my regular truck has been off the road with major mechanical failure, its only 18 months old but thankfully made just before everything went digi that come with umpteen bings and bongs going off all day long, as i said on another thread there's never a 12 year old child handy when you need one to find and delete all that garbage.

Edited by gordonbennet on 28/09/2025 at 01:28

Mazda 3 - Awful headlights - focussed
When I moved to France in 2009 I had to replace the headlight units on our L200 pickup with dip to the right units for driving on the right.
A local brit-run garage supplied a pair of Depo aftermarket units, made in Korea, together with some uprated tungsten bulbs they were the best headlamp set up on any car I've ever had, you could see for miles on a country road at night here when it's really black out conditions - no street lamps !

EG -www.eurocarparts.com/p/depo-headlamp-471820241