Liverpool Auto Electrical Specialists
ECU testing, retrofitting, in-depth vehicle diagnostics and full mechanical repairs. We solve problems other garages can't — based in Liverpool city centre, serving all of Liverpool.
4.4/5
Google Rating
32
Reviews
8
Core Services
L9
L3
"If Nav can't fix it, nobody can. Had me a new ECU programmed and fitted within 24 hours at a brilliant cost."— Liverpoolsanta, Google Review
Our Services
Specialist vehicle electronics, diagnostics and mechanical repairs across all makes and models. Transparent pricing, no shortcuts.
Coding
Vehicle module coding to activate features, configure settings, and customise your car's systems to your specification.
Programming
Software programming for control modules, key programming, and system updates across all major manufacturers.
Auto Electronics
Full auto electrical diagnostics and repairs — wiring faults, sensor issues, lighting, battery systems and complex electrical problems.
ECU Testing & Repairs
ECU fault testing, repair and replacement. We diagnose and fix ECU issues that other garages often miss or misdiagnose.
Retrofitting
Retrofitting OEM and aftermarket features into your vehicle — bringing newer technology and functionality to older models.
In-Depth Diagnostics
Advanced diagnostic scanning that goes beyond basic code reading to find root causes — not just symptoms.
Service & Repairs
General vehicle servicing and mechanical repairs carried out properly, at fair and transparent prices.
Exhaust · Clutch · Engine Rebuild
Exhaust repairs and replacement, clutch and flywheel work, and full engine rebuilds — done right, first time.
Why N&J Autos
We combine hands-on mechanical expertise with the latest diagnostic and programming tools. When you bring your car to us, you'll deal with people who actually understand what's going on under the bonnet.
Get in TouchHonest Diagnosis
We tell you what's actually wrong and what it'll cost — before we start. No unnecessary parts, no inflated bills.
Fast Turnaround
Many jobs completed same-day or within 24 hours. We know you need your vehicle back on the road.
We Fix What Others Can't
Customers come to us after other garages have given up. Complex ECU faults, software problems, engine issues — we find the real fix.
Clear Communication
We keep you informed throughout and call you as soon as your vehicle is ready. No chasing, no guessing.
Customer Reviews
4.4
32 Google Reviews
"If Nav can't fix it, nobody can. Had a problem with my ECU and he had me a new one programmed and fitted for a brilliant cost within 24 hours. He's the main man."
Liverpoolsanta
3 weeks ago
"Brought my Cupra in with an issue that had been really frustrating. He took the time to explain everything clearly, very honest and professional. Would definitely recommend."
Silmara A.
3 months ago
"The owner was so nice — helped me get started after breaking down, then fixed my car at his shop the same day. All sorted by next morning. Quick and smooth."
Dexter C.
1 week ago
"My timing was fixed here when every other mechanic was saying to change the engine. Old school guys who really know their stuff — the best."
Abduallh A.
1 year ago
"Got in touch after another company installed the wrong software on my Jaguar. N&J Autos got the car back on the road within days. Couldn't recommend them enough."
Domonic
1 month ago
"Great garage, amazing service, got my car in straight away. Work completed super fast, kept me updated along the way. Very friendly and knowledgeable. 100% recommend."
Amy F.
3 months ago
Find Us
Give us a call or fill in the form. We'll get back to you and get your vehicle booked in.
Address
59-61 Great Richmond Street
Liverpool L3 3BF
Phone
Opening Hours
Mon–Fri: 9:00am – 6:00pm
Sat–Sun: Closed