Car Diagnostic UK
Greater London and UK-wide where technicians are available.
Service hub
Mobile Diagnostics in London, Birmingham and Manchester
On-vehicle fault reading, coding, and diagnostic checks from mobile technicians.
From customers
Recent reviews
Comments left on operator profiles in this hub. Always confirm price and arrival time when you call.
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Full OBD scan in Oxford after limp mode — printed fault list, cleared codes where safe, and advised on next steps.
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Pre-purchase inspection in Slough before buying a used diesel — picked up DPF history issues I would have missed.
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Electrical gremlin in a Volvo in Maidstone — methodical testing, though the report could have had more photos.
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Engine light on the M4 corridor — mobile tech met me at services, read live data, and ruled out coil packs cheaply.
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Performance diagnostics on a mapped car in Essex — honest about what was tune-related vs hardware.
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Battery and charging diagnostics in Cambridge — oscilloscope-style testing explained in plain English.
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Good session in Plymouth — found an intermittent sensor. Follow-up email with part numbers would have been the cherry on top.
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EV readiness check before a long trip — state of health readouts and charging curve explained clearly.
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Emissions-related codes in Leeds — they didn’t just clear them; verified sensors after repair.
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Same-day slot in Bath for a warning light before MOT — passed the retest first time after their fix recommendation.
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Cylinder balance contribution test on a misfire in Gloucester — ruled out injectors cheaply before a head-off quote.
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CAN bus noise hunt in Hull — shielded cable advice for dash cam install, didn’t upsell their own brand.
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Thermographic check on a charger cable in Durham — hotspot at the plug, not the car. Clear evidence for insurer.
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SCR efficiency low codes on a diesel in York — forced regen data logging showed sensor drift, not catalyst dead.
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Fuel trim live graph in Carlisle — vacuum leak found at a cracked hose behind the intake. Cheap fix.
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Knock sensor verification in Aberdeen — scoped waveform; garage accepted report for warranty.
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ABS wheel speed comparative test in Norwich — identified rear left tone ring crack visually after codes.
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Glow plug current ramp test in Inverness — two weak plugs, replaced only those.
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