This year, the clocks will go back on Sunday 25th October. As a result, drives home are about to get much darker. The school pickup, the evening run to the shops, the commute back from Tonbridge or Sevenoaks: all of it suddenly happens under headlights. And with autumn fog, wet leaves on the lanes and colder mornings, you’re asking your car to handle a lot more than it was just a few weeks ago.
The good news? Most of what keeps you safe in the dark is quick to check. Here’s what we’d recommend looking at first.
Headlights, tail lights and alignment
If you did our back-to-school car check in September, you’ll already have walked round the car and checked your bulbs. But when you’re driving in the dark, it’s not just whether your lights work. It’s how well they actually light the road.
Aim matters more than you’d think. Headlights that sit too high can reduce visibility for oncoming drivers on unlit lanes. If they sit too low, you may struggle to see the road ahead clearly. A heavy boot, a recent bump or worn suspension can all knock them out of place, but it’s easy to check. Park facing a wall or garage door at night: if one beam sits noticeably higher or lower than the other, have them looked at. Headlight aim is part of the official MOT inspection standards for lamps, and so it’s worth getting this right.
Cloudy lenses can also dim your view. Older plastic headlight covers go yellow and hazy over time, cutting the light that reaches the road. It’s easy to miss in summer, but very obvious on a dark October evening.
Don’t rely on daytime running lights. On many cars, those bright front DRLs don’t switch on your tail lights. In dusk, fog or rain you can feel lit up while being almost invisible from behind. If your car has auto lights, check they’re actually set to auto, and if in doubt, switch dipped beams on yourself.
A quick word on fog lights: use them when visibility drops below about 100 metres, and switch them off as soon as it clears. Rear fog lights left on in light drizzle just blind the driver behind you.
Windscreen condition
Low autumn sun and oncoming headlights will find every little chip on your windscreen that you may not have noticed in summer. Chips and cracks scatter light into glare, which is the last thing you want on a dark, wet road. Smaller chips can often be repaired before they spread, so don’t leave it until it’s a full crack across your line of sight.
Cold weather also makes chips spread faster. As temperatures drop, the glass expands and contracts between frosty mornings and a warm cabin. Blasting the heater onto an icy screen is one of the quickest ways to turn a small chip into a long crack. Let the demister warm the glass gradually, and use a scraper and de-icer rather than hot water, which can crack a damaged screen outright.
It’s an MOT issue too. Damage in the driver’s main line of sight (roughly the area directly in front of the steering wheel) can fail an MOT if it’s larger than 10mm, and damage elsewhere in the area the wipers clear can fail at 40mm. If you’re not sure whether a chip is worth worrying about, pop in and we’ll give you an honest answer. Most of the time, a quick repair now is far cheaper than a new screen later.
Wiper blades and washer fluid
A wiper that leaves a thin streak in daylight is a minor annoyance. But at night, every oncoming headlight turns that streak into a smeared starburst right across your line of sight. If you’ve noticed glare getting worse on the drive home, the blades are often the culprit.
As the days get colder, swap to winter screenwash. Plain water or a summer mix can freeze in the bottle or on the glass on frosty mornings, which is exactly when you need it. A proper winter screenwash also cuts through the greasy road film that builds up from spray and wet leaves.
And it’s not just the bottle you need to check. Washer jets can get blocked or knocked out of line, spraying over the roof instead of onto the screen. Give them a test while it’s still light. Worn blades and washers that don’t clear the screen are also covered in the official MOT inspection standards, so it’s worth sorting them before your test.
Finally, never run wipers on a frozen screen. It’s tempting on a dark, rushed morning, but it tears the rubber edge and can strain the wiper motor. Defrost first, then wipe. And don’t forget the rear wiper: it’s easy to ignore, until you can’t see behind you on a cold morning.
Battery health
Your battery will drain faster in these next few months than at any other time of year. Think about the drive home in late October: headlights on, heater on, wipers going, maybe heated seats too. All of that is drawing power at once, often on a short journey that doesn’t give the alternator enough time to put it back.
At the same time, cold weather reduces how much power a battery can actually deliver. So a battery that was borderline in September can tip over the edge on the first properly cold morning.
Watch for the early signs: headlights that dim when you’re idling, a heater fan that slows down at junctions, or a battery light flickering on the dash. If your battery is more than four or five years old, it’s worth testing before the cold sets in, not after it’s left you on the drive at 7am in the dark.
Tyres for wet and cold roads
In the dark, you see hazards later. That means you’re relying on your tyres to stop you in less distance than you’d have in daylight, often on roads covered in rain, mud and wet leaves.
Wet leaves are the hidden autumn hazard. On tree-lined lanes around Hildenborough, a layer of wet leaves can be almost as slippery as ice, and at night you often can’t see them until you’re on them. Tread is what clears that water and muck away, so the legal minimum of 1.6mm is really a floor, not a target. Heading into winter, many experts recommend replacing tyres at around 3mm. Pop a 20p coin into the tread. If you can see the outer band, it’s time to get your tyres checked.
Cold air means lower pressure. As temperatures drop overnight, tyre pressures drop with them, so tyres that were spot on in September can be noticeably soft by November, even without a puncture. Check them monthly through the colder months, and do it while the tyres are cold for an accurate reading.
The visibility extras
A few small things that make a difference after dark:
- Clean the inside of your windscreen. A film of grime on the inside fogs up the glass faster and catches glare.
- Check your demister and rear window heater are working before you need them on a cold morning.
- Keep your number plates clean. Dirty, unreadable plates can land you with a fine, and they’re easy to miss after a few muddy drives.
Not sure where to start? Pop in.
You don’t need to book anything to get a second opinion. At Hildenborough MOT & Servicing we offer free tyre and level checks any time, so if you’re passing by, just drop in and we’ll take a look. We’ll only tell you what actually needs doing, nothing more.
And if you’d rather get everything covered in one go before winter, our MOT & Service bundle (from £179 + VAT) is the easiest way to make sure your lights, tyres, battery, wipers and fluids are all ready for the darker months. You can even opt for a local drop-off on the way to work.
The clocks are going back either way. Make sure your car is ready for the change.