Services
Mechanical Services in Sunbury-on-Thames
The Factory provides servicing, diagnostics and mechanical repairs for all makes and models, from routine maintenance to complex engine, gearbox, electrical and high-voltage work.
Try “squeaking brakes”, “car drops overnight”, “engine rattles”, “MOT van” or “air con warm”.
Servicing & Inspection
Servicing, MOTs, diagnostics and inspections.
Car Servicing
Servicing to the manufacturer schedule for all makes and models, petrol to full EV.
Class 4 MOT
DVSA-authorised Class 4 MOT testing on site, on our dedicated MOT ramp.
Class 7 MOT
On-site Class 7 MOTs for goods vehicles over 3,000kg up to 3,500kg.
Vehicle Diagnostics
Dealer-level fault finding — not just reading and clearing codes.
Vehicle Health Checks
A thorough independent check of your vehicle’s condition.
Pre-Purchase Inspections
An independent mechanical inspection before you buy a used car.
Engine & Timing
Wet belts, cambelts, chains, engine repair and cooling.
Wet Belt Replacement
Inspection, diagnosis and replacement of belt-in-oil timing systems.
Timing Belt / Cambelt Replacement
Cambelt replacement with the correct kit and checks for your engine.
Timing Chain Replacement
Diagnosis of chain stretch, rattles and timing faults — and correct replacement.
Engine Repairs
Diagnosis and repair of misfires, leaks, poor running and mechanical faults.
Engine Rebuilds
Diagnosed, planned engine rebuilds as an alternative to replacement.
Oil Leak Diagnosis & Repair
Tracing the true source of oil leaks and repairing them properly.
Cooling System Repairs
Overheating, coolant loss and heater problems diagnosed and repaired.
Radiator, Water Pump & Thermostat
Replacement of key cooling components, including electric pumps.
Turbocharger Repairs
Confirming turbo faults properly and repairing the cause, not just the symptom.
Exhaust Repairs
Exhaust repairs and replacement, with welding where required.
Brakes, Steering & Suspension
Brakes, suspension, air suspension, alignment and tyres.
Brake Repairs
Pads, discs, calipers, hydraulics and electronic parking brakes.
Brake Fluid Change
Fluid testing and replacement to the manufacturer’s specification.
Suspension Repairs
Knocks, instability and uneven tyre wear diagnosed and fixed.
Air Suspension
Leaks, compressors and warning messages on BMW, Land Rover, Mercedes and more.
Steering Repairs
Heavy steering, wandering, knocks and electric power steering faults.
Hunter Four-Wheel Alignment
Laser four-wheel alignment on Hunter equipment.
New Tyres & Balancing
Supply and fitting of brand new tyres, balanced when fitted.
Wheel Bearings
Diagnosing humming and droning noises and replacing worn bearings.
ADAS Calibration
Calibration of driver assistance systems after relevant work.
Gearbox & Drivetrain
Clutches, flywheels and automatic gearboxes.
Clutch Replacement
Slipping, judder and selection problems diagnosed and repaired.
Dual-Mass Flywheel
Diagnosing rattles and vibration from dual-mass flywheels.
Automatic Gearbox Servicing
Fluid servicing and flushing where appropriate for modern automatics.
Gearbox Repairs & Rebuilds
Manual and automatic gearbox diagnosis, repair and rebuild.
Diagnostics, Electrical & Climate
Auto electrics, batteries, coding and air con.
Auto Electrical Repairs
Wiring, sensor, module and battery drain faults traced and fixed.
Battery Replacement
12V battery testing, replacement and registration where required.
Alternator Repairs
Charging system testing and alternator replacement.
Starter Motor Repairs
Diagnosing clicks, slow cranking and no-start faults.
Vehicle Coding
Module coding and programming after repairs and replacements.
Air Conditioning
R134a and R1234yf servicing, leak finding and repair.
Emissions
DPF, EGR and AdBlue — diagnosed and repaired legitimately.
DPF Diagnostics & Cleaning
Proper diagnosis of DPF warnings, cleaning and repair — never deletion.
EGR Repairs
EGR valve and cooler diagnosis and repair.
AdBlue / SCR Repairs
Legitimate diagnosis and repair of AdBlue warnings and countdowns.
Emissions Diagnostics
MOT emissions failures, smoke and emissions warnings diagnosed.
EV & Hybrid
High-voltage servicing, diagnostics and battery work.
Other Services
Collection, recovery, security and remapping.
24/7 Vehicle Recovery
24/7 UK-wide recovery arranged through our recovery partner.
Free Local Collection & Return
We collect your car from home or work and return it — by arrangement.
MetaTrak Vehicle Security
Authorised MetaTrak installation.
ECU Remapping & Tuning
Considered remapping for suitable vehicles — no emissions deletion.
Tell Us What Your Car Needs.
Send us your registration and a quick description on WhatsApp, or call the workshop.
The Factory, Harris Way, Sunbury-on-Thames TW16 7EL