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How Much Does a Car Electrician Cost in the UK?
Electrical jobs range from a modest battery swap to several hundred pounds of alternator or wiring work. Here are honest UK market ranges — and how to judge any quote fairly.
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There is no single price for 'a car electrician', because the work ranges from a twenty-minute battery swap to a full day tracing an intermittent wiring fault through a loom. What follows are UK market ranges for the jobs drivers ask about most, the factors that move a quote up or down, and the questions that reveal whether a quote buys you a proven repair or a guess.
One principle runs through every section: testing is the cheapest part of any electrical repair when it is done properly, and the most expensive when it is skipped — because guessed parts are bought with your money. The ranges below are general UK market figures, not our prices; our own quotes at Car Electrician Birmingham are always confirmed free before any work starts.
Typical UK price ranges for common electrical jobs
A replacement car battery fitted typically costs £80-£250 depending on size, type and whether the car is a stop-start model needing an AGM or EFB battery and registration to the charging system. An alternator replacement commonly runs £250-£600 fitted, with access on some engines pushing labour higher. A starter motor replacement usually falls in the £200-£500 range fitted.
Fault-finding itself is priced by time: tracing a battery drain or a wiring fault commonly costs £50-£100 per hour at independent specialists, and many drains are found within the first hour or two. Smaller jobs sit lower — lighting repairs and central locking repairs often come down to a switch, motor or section of loom — while ECU repair varies widely with the unit involved.
What makes one quote higher than another
Four things move the price. First, the part itself: a stop-start battery or a high-output alternator simply costs more than a basic unit. Second, access — on some cars the starter motor hides behind the exhaust or intake, and the labour reflects that. Third, the fault's behaviour: a component that has failed outright tests quickly, while an intermittent fault that only appears in the rain takes patient, methodical time. Fourth, where and when: a mobile electrician coming to your drive at 9pm prices in a convenience a booked workshop slot does not.
None of those make a higher quote a worse one. The quote to be wary of is the suspiciously cheap one that skips the testing stage entirely — a part swapped on a hunch, with the bill for the second and third guesses still to come.
How to compare car electrician quotes fairly
Ask three questions of any quote. What exactly will you test, and how will you prove the part has failed before replacing it? Is the price for the part, the labour and the testing all included, or will extras appear? And if the first part does not cure it, what happens next — a phone call to agree more work, or an open-ended bill? A good auto electrician answers all three without hesitation.
Also compare like with like on the outcome: proper testing sometimes identifies a £20 earth strap or a broken wire, where a guessed approach might have fitted a £400 alternator first. Judge the total cost of getting the car right, not the price of the first hour in isolation.
Related guides
Guide
Signs of a Failing Alternator: Symptoms to Spot
Dim lights, a battery warning light, strange noises and a car that dies after a jump start — the classic signs your alternator is failing, explained.
Read the guide →Guide
Signs of a Failing Starter Motor: Key Symptoms
Clicking, grinding, slow cranking or nothing at all — the symptoms of a failing starter motor, and how to tell it apart from a flat battery.
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Why Does My Car Battery Keep Going Flat?
Flat battery every few days? The three families of causes — drains, charging faults and the battery itself — and how each one is found and fixed.
Read the guide →Frequently asked questions
How much does it cost to replace a car alternator in the UK?
Across the UK market, alternator replacement typically costs £250-£600 fitted, depending on the car's engine layout, the output rating of the unit and how much has to come off to reach it. These are general market ranges, not a quote — your exact price should always be confirmed before work starts.
How much does a new car battery cost fitted?
A replacement battery supplied and fitted usually costs £80-£250 in the UK. Conventional batteries sit at the lower end, while larger stop-start AGM and EFB batteries cost more, and some cars also need the new battery registered to the charging system. The right specification matters more than the cheapest price.
Why do electricians charge for fault-finding time?
Because finding the fault is skilled work in its own right: measuring current draw, testing circuits under load and proving which component failed. That testing is what stops you paying for parts your car never needed. A guessed alternator or battery costs far more than the hour spent proving the real cause first.
Is a mobile car electrician more expensive than a garage?
Not necessarily. Mobile electricians carry no workshop overheads, and you save the recovery or second-car logistics of getting a non-starting car to a garage. Evening and urgent bookings may price higher than a standard daytime slot, reflecting the convenience rather than the repair itself — always confirmed before work begins.
How much does it cost to find a battery drain?
Battery drain tracing is normally charged by time, commonly £50-£100 per hour at UK independent specialists, and many drains are isolated within the first hour or two of methodical testing. Complex intermittent drains can take longer. Any reputable service agrees the approach and likely cost with you before the bill grows.
Should I get a quote before agreeing to electrical work?
Yes — always. A proper quote is confirmed before work starts, explains what testing found, and names the part and labour involved. If testing uncovers something different once work begins, the revised price should be agreed with you first. That is how we work at Car Electrician Birmingham, and it should be your test of anyone else.
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