Window tint · 20% VLT · dark tint
20% tint: what it looks like
20% is one of the most requested shades: dark enough for real privacy, light enough that most drivers can still see out comfortably on lit roads at night.
- Front side windows: 20% film on clear glass
- ≈ 16% gets through
- 14%–17% on glass of 70–85%. Below the 70% minimum for front side windows in Great Britain.
- Rear windows: 20% film on clear glass
- ≈ 16% gets through
- 14%–17% on glass of 70–85%. Great Britain sets no limit for rear side windows or the rear screen.
An approximation drawn over a stock photo. Real film looks different with the light, the glass colour and the film type, so check samples in person.
What 20% tint looks like from outside
In daylight
Dark and glossy. From a normal distance you see reflections; close up in bright light you can make out silhouettes and headrests.
At night
Very dark. With interior lights off, people inside are hard to see; with them on, they are visible.
Seeing out from the driver's seat
In daylight
A clear view out with glare cut well down. Many owners say it feels like wearing light sunglasses.
At night
Darker than factory glass and noticeable when reversing or on unlit roads, but most drivers adapt on lit streets.
Common uses for 20% tint
- Rear windows for privacy and keeping valuables out of sight
- A uniform dark look on cars without factory privacy glass
- Reducing glare and sun on rear passengers
20% film on factory glass
Film goes on glass that already blocks some light, and the two multiply. This is roughly what a tint meter would read with 20% film fitted.
| Glass | Glass VLT | With 20% film |
|---|---|---|
| Factory clear glass | 70% | 14% |
| Factory clear glass, typical | 80% | 16% |
| Factory clear glass | 85% | 17% |
| Factory privacy glass | 15% | 3% |
| Factory privacy glass, typical | 20% | 4% |
| Factory privacy glass | 30% | 6% |
Is 20% tint legal in the UK?
| Window | Minimum light through | 20% film on typical glass | Result |
|---|---|---|---|
| Windscreen | 75% | ≈ 16% | Too dark |
| Front side windows | 70% | ≈ 16% | Too dark |
| Rear side windows and rear screen | No limit | ≈ 16% (≈ 4% on privacy glass) | No GB limit |
In Great Britain, for vehicles first used on or after 1 April 1985, the windscreen must let at least 75% of light through and the front side windows at least 70%. There are no rules for tinting the rear side windows or the rear windscreen. For vehicles first used before 1 April 1985, the windscreen and front side windows must both let through at least 70%.
The limit applies to the window as a whole, glass and film together. Because factory glass already blocks some light, 20% film is likely to take a front side window below 70%. The police and DVSA examiners use light meters, and windows that are too dark can lead to a prohibition notice stopping you using the vehicle until the tint is removed, a penalty notice or a court summons. Source: GOV.UK, tinted vehicle windows: the law.
In the US
There is no single US limit. Each state sets its own rules, usually with separate limits for the windscreen strip, front side windows, rear side windows and rear window, and some states treat sedans differently from SUVs, vans and trucks. Rules on reflective film and medical exemptions vary too. Check your state's DMV or the statute itself before you book, and remember that the limit usually applies to the glass and film together.
Compare 20% with other shades
See this tint on your own car.
The picture above is drawn over a stock photo. The studio renders tint onto a photo of your car, at your angle and in your light. Upload a photo, open Window tint and choose Dark 20%.
See this tint on your own carBoth the visualiser and the render are approximations of how film looks. Ask your installer to show samples and meter the result.
Explained in our guides
Tint counts as a modification, so check what your insurer needs to know.
- UK car insurance: declaring wheels, wraps and other modificationsPrepare a clear modification list for your UK insurer, check acceptance and replacement cover separately, and understand why undeclared-change outcomes vary.
- How to preview car mods before you buy themAvoid expensive regrets: how to see wheels, colours, wraps and stance on your own car before spending, and how to check the parts will actually fit.
Questions
Can you see into a car with 20% tint?
In daylight, from a normal distance, mostly not: you see reflections. Up close, or when the light behind the car is bright, you can make out shapes. At night with the interior lights on, you can see in.
Is 20% tint legal in the UK?
On the rear side windows and rear windscreen there is no limit in Great Britain. On the front side windows it is too dark: they must let at least 70% of light through, and 20% film on typical factory glass lets through around 16%.
Is 20% tint hard to see out of at night?
It is darker than untinted glass, and drivers notice it most when reversing, in multi-storey car parks and on unlit lanes. Most say they adapt on lit roads. If you do a lot of rural night driving, consider 30% or 35% instead.
How much light gets through 20% tint on factory glass?
About 16% on typical clear glass (14%–17% across glass of 70–85%), and about 4% on factory privacy glass. Film and glass VLTs multiply, so a tint meter reads lower than 20%.