What to Do If Your Car Breaks Down (and How to Avoid It)

A breakdown is one of those things you hope never happens — but if it does, the difference between a calm wait for recovery and a genuinely dangerous situation comes down to knowing what to do. Here's how to handle it safely, and the simple checks that stop most breakdowns before they start.

The moment it happens

If your car loses power or develops a serious fault while driving:

1. Get off the road if you can — the hard shoulder, a layby, or a quiet side street. Keep as far from moving traffic as possible.
2. Hazard lights on straight away. At night or in poor visibility, leave your sidelights on too.
3. Get everyone out and away from traffic — through the doors furthest from the road, and stand well clear.
4. Call for help — your breakdown provider, or the emergency services if you're in a dangerous position.

The order matters: getting clear of moving traffic comes before anything else.

On a motorway — the rules are different

Motorway breakdowns are the most dangerous, so the advice is specific:

• Pull onto the hard shoulder (or an emergency refuge area on a smart motorway), as far left as you can, with your wheels turned to the left.
• Hazard lights on.
• Get out through the left-hand doors, away from the traffic, and get behind the safety barrier. Never stay in the car and never stand in front of it.
• On a smart motorway with no hard shoulder, if you can't reach a refuge area, get as far left as possible, leave the vehicle if it's safe, get behind the barrier, and call for help.
• Never put out a warning triangle on a motorway — walking back along live lanes is far too dangerous.

On ordinary roads, a warning triangle placed at least 45 metres behind the car helps — but only if you can set it up safely.

What causes most breakdowns

The vast majority of breakdowns come from a short list — and nearly all of them give warning signs first:

• Battery problems — the single most common cause, especially after a car has sat unused.
• Tyres — punctures and blowouts, often from worn or under-inflated tyres.
• Cooling and overheating — particularly in summer traffic.
• Electrical and engine faults — frequently preceded by a warning light or odd noise.

How to avoid one

Most breakdowns are preventable with basics most drivers skip:

• Keep up with servicing — it catches problems before they strand you.
• Check your tyres — tread, condition and pressures, including the spare.
• Watch your battery — have it tested if it's a few years old or the car sits idle a lot.
• Don't ignore warning lights or new noises — they're the car telling you something before it fails.
• Keep fluids topped up — coolant, oil, screenwash.

A car with a clean MOT, a full service history and no recurring advisories is far less likely to leave you on the hard shoulder. Before a long trip, it's worth checking your car's MOT history and what's due free with the registration — recurring advisories are exactly the niggles that turn into breakdowns.

A note on breakdown cover

If you don't have breakdown cover, it's worth considering — a single recovery without it can cost more than a year's membership, and on a motorway it's about safety as much as money. Whether through your insurer, your bank account perks, or a standalone provider, knowing help is one call away takes the fear out of the worst-case.

The bottom line

If you break down: get clear of traffic, hazards on, everyone out and behind the barrier, then call for help — and on a motorway, never linger in or by the car. Better still, prevent it: most breakdowns start with a flat battery, a tired tyre or an ignored warning light, all of which you can catch with a few minutes of basic checks.