How to Fix: Car not starting
Experiencing a car that won't start is a common issue for UK drivers, especially during colder months. This guide will help you diagnose and fix the problem, whether you're looking for a cheap car fix or seeking a reliable garage. Understanding the root cause is essential for an effective solution.
Symptoms to Look For
- ▸Engine doesn't turn over when the key is turned
- ▸Clicking noise when attempting to start the car
Common Causes & Costs
Flat or Faulty Battery
Easy — DIY friendlyA dead or weak battery is the most common reason for a car not starting, especially in cold UK weather. Symptoms include dim lights and a clicking sound when turning the key. To confirm, check if the headlights are dim or if electrical components are unresponsive.
Estimated cost: £30–£80 DIY or £80–£150 garage
Faulty Starter Motor
moderateThe starter motor is responsible for turning the engine over. If it's faulty, you may hear a clicking noise when trying to start the car. To confirm, listen for a single click or a series of clicks when turning the ignition.
Estimated cost: £150–£300 garage
Fuel Pump Failure
moderateA malfunctioning fuel pump can prevent fuel from reaching the engine, causing the car not to start. Symptoms include the engine cranking without starting and no sound from the fuel pump when the ignition is turned on.
Estimated cost: £100–£200 garage
Immobiliser Issues
moderateThe immobiliser is a security feature that prevents the engine from starting without the correct key. If there's an issue, the engine won't start, and you might see a flashing key symbol on the dashboard. To confirm, try using a spare key or check the key fob battery.
Estimated cost: £50–£150 garage
Faulty Spark Plugs
Easy — DIY friendlyWorn or damaged spark plugs can prevent the engine from igniting the fuel-air mixture, leading to starting issues. Symptoms include misfiring, poor fuel economy, and difficulty starting the engine. To confirm, inspect the spark plugs for wear or damage.
Estimated cost: £10–£30 DIY or £50–£100 garage
Step-by-Step Fix
Check the Battery
Ensure the battery terminals are clean and securely connected. If the battery is over 4 years old, consider replacing it. In cold UK weather, batteries are more prone to failure.
Test the Starter Motor
Listen for a clicking sound when turning the ignition. If present, the starter motor may be faulty. It's advisable to consult a professional mechanic for replacement.
Inspect the Fuel Pump
Turn the ignition to the 'on' position and listen for a humming sound from the fuel pump. If absent, the fuel pump may need replacement. Seek assistance from a qualified garage.
Verify the Immobiliser
Try using a spare key to start the car. If successful, the original key may be faulty. If the issue persists, consult a professional to inspect the immobiliser system.
Examine the Spark Plugs
Remove and inspect the spark plugs for signs of wear or damage. Replace any faulty plugs. Regular maintenance can prevent starting issues related to spark plugs.
When to Call a Garage
If you've attempted the above steps and the car still won't start, it's time to consult a professional. Complex issues like fuel pump failures or immobiliser problems require specialised equipment and expertise. Use AGarageNearMe.co.uk to find a trusted local garage that can diagnose and fix the problem efficiently.
Not sure what's wrong with your car?
If you are unsure what is causing the problem, chat with John for a free car diagnostic before spending money at any garage.
Frequently Asked Questions
How do I fix car not starting?
Start by checking the battery, starter motor, fuel pump, immobiliser, and spark plugs. If the issue persists, consult a professional mechanic.
What causes car not starting?
Common causes include a flat battery, faulty starter motor, fuel pump failure, immobiliser issues, and worn spark plugs.
How much does it cost to fix car not starting in the UK?
Costs vary depending on the cause. Battery replacement can cost £30–£150, while more complex issues like fuel pump replacement may cost £100–£300.
Can I fix car not starting myself?
Some issues, like replacing a battery or spark plugs, can be done DIY. However, complex problems should be handled by a professional.
Is car not starting dangerous to drive with?
If your car won't start, it's not drivable. Attempting to force it can cause further damage. It's best to diagnose and fix the issue before driving.
Information is for guidance only. Always prioritise safety — if unsure, consult a qualified mechanic.