Saved £865
★★★★★
Daniel · London
Ford Fiesta 2016
Engine shaking
John found: Loose ignition coil causing misfire
“John spotted the issue in minutes — other garages wanted to replace half the engine.”
Garage quoted: £950Fix: £85
Car Diagnostic no appointment
in a garage near me
Lucy
Don't get ripped off! Get a car diagnostic before visiting the garage!
30 Years as a Reliable and Trustworthy Mechanic - now online
Lucy
Don't get ripped off! Get a car diagnostic before visiting the garage!
Jenna
Pay what is fair, not what they ask you to. John will tell you.
Mike
Know how much for the parts and how much the labor costs in the garages near you.
John Mechanic
I'm John, the garage guy. And what I do is easy: I save you a lot of money.
John Mechanic
How? I help you diagnose your car for free. I help you compare cars to buy. I show you tricks and info so you get the most out of your car. You'll be known as Da Car Master after asking me a few questions.
John Mechanic
I can also help you buy the right car. Or understand the right finance... without selling you anything. That should give you confidence because I'm not getting anything from it... just your trust. But I can help you understand the different purchasing options to match what you want, need and can afford.
John Mechanic
To get my help: Ask me questions. Show me some pictures. Or pull your car details for free from the DVLA records.
John Mechanic
Pick your problem to start
Quick car diagnostic without appointment in the car garage near me.
The information shown on this site can not replace an in-person consultation, expert repair, or professional advice, but it will give you a level of knowledge to chose the right expert, save money and make informed decisions.
What John's Diagnosed
Real UK drivers. Real savings. No exaggeration.
Saved £1,100
★★★★★
Sarah · Manchester
Vauxhall Corsa 2018
Steering warning light
John found: Low power steering fluid and sensor reset
Garage quoted: £1,200Fix: £100
Saved £1,350
★★★★★
Mark · Birmingham
Volkswagen Golf 2015
Engine rattle
John found: Loose heat shield
Garage quoted: £1,400Fix: £50
Saved £1,680
★★★★★
Olivia · Leeds
Ford Focus 2014
Hard gear shifting
John found: Worn clutch cable adjustment
Garage quoted: £1,800Fix: £120
Saved £520
★★★★★
Ahmed · London
Nissan Qashqai 2017
Parking sensor failure
John found: Dirt buildup and wiring issue
Garage quoted: £600Fix: £80
Saved £1,940
★★★★★
Emma · Bristol
BMW 3 Series 2013
Engine warning light
John found: Faulty vacuum hose
“John diagnosed it in one session. Saved me nearly £2,000.”
Garage quoted: £2,000Fix: £60
Latest Diagnoses
Saved £520
★★★★★
James · Leeds
Ford Fiesta 2019
Engine misfire at idle
John found: John found the issue was actually a faulty spark plug, not the coil pack.
“Thanks to John at AGarageNearMe, I discovered my Ford Fiesta's misfire at idle was just a dodgy spark plug, not the expensive coil pack the garage quoted me for!”
Garage quoted: £650Fix: £130
Saved £1,020
★★★★★
Sophie · Sheffield
Vauxhall Corsa 2018
ABS warning light
John found: John found that a faulty wheel speed sensor was causing the issue.
“Thanks to John and AGarageNearMe, I avoided a hefty garage bill and got my ABS light sorted for a fraction of the cost!”
Garage quoted: £1,200Fix: £180
Quick Car Diagnostic without appointment in a garage near me — By Make & Problem - Like the garage near me but better
John has diagnosed car problems across the UK — from Ford Fiesta engine misfires in London, to Vauxhall Corsa steering faults in Manchester, VW Golf engine rattles in Birmingham, and BMW warning lights in Bristol. Whatever your car make, John starts from the most likely cause and walks you through it step by step — before you spend anything.
Common UK car problems John diagnoses every day: engine warning lights, ABS faults, suspension noises, brake warnings, AC not cooling, battery drain, water leaks inside the car, and cars that won't start. Most turn out to be simpler — and far cheaper — than garages quote.
John Mechanic
30 Years Experience
From small independents in Manchester to busy main dealers in London — 30 years diagnosing UK cars.
Successful Car Diagnostics by car make
Useful Guides
Garages Near MeFind trusted local garages across the UK.Common Car ProblemsKnown faults & what to watch out for.Repair Cost GuidesTypical UK prices for common repairs.UK Car ReviewsHonest owner verdicts — not all 5 stars.Fix My CarStep-by-step guides for common faults.Used Car GuidesWhat to check before you buy.Car ComparisonsHonest head-to-head for buyers.Real DiagnosesReal UK drivers, real savings.Our AuthorsThe experts behind the guides.
The information shown on this site can not replace an in-person consultation, expert repair, or professional advice, but it will give you a level of knowledge to chose the right expert, save money and make informed decisions.
Testimonials are based on real quick car diagnostics. Results and savings may vary depending on vehicle condition, location, and repair provider. Content is provided for informational purposes only and does not replace professional mechanical inspection.
The UK's Online Mechanic — No Garage, No Appointment, No Booking
Looking for a garage near me? Before you book one, chat with John. He diagnoses your fault first so you know exactly what to ask for — and what a fair price looks like. Works in London, Manchester, Birmingham, Leeds and everywhere across the UK.
Need to fix your car but hate waiting? John gives you an instant car diagnostic with no booking and no appointment. Engine warning light, ABS fault, car won't start, brake problem, strange noise — describe it and John tells you what it is in minutes.
Common UK cars John handles daily: Ford Fiesta, Ford Focus, Vauxhall Corsa, Vauxhall Astra, VW Golf, VW Polo, BMW 3 Series, Audi A3, Toyota Yaris, Nissan Qashqai, Renault Clio, Peugeot 208, Mercedes C Class, Hyundai i20, Kia Sportage and all other makes sold in the UK.
Buying a used car? Tell John the make, model and year and he will list the most common problems to check, typical repair costs and whether the price is fair. Great for comparing cars, cheap finance decisions and avoiding hidden faults before you commit.
Got a garage quote that sounds too high? John will give you a second opinion on car repair costs instantly. UK drivers save an average of £400 per diagnostic case by knowing what is actually wrong before the garage gets involved.
Car diagnostic - No appointment, in a garage near you.No waiting. No upselling. Just John — 30 years of UK garage experience, available right now.