Metallic rattle on cold start and EML illumination due to timing chain stretch.
Inspect · Start the engine from dead cold with the bonnet open. Listen closely to the timing cover side for a distinct metallic rattle lasting 3-5 seconds.

What the known faults on this MG 3 typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
The single priciest documented job on the 2013–2024 MG 3 is timing chain, tensioner & guides at £900–£2,400. Few cars need every repair listed here · treat £2,800–£11,400 as the full exposure if one arrived with all of them.
Metallic rattle on cold start and EML illumination due to timing chain stretch.
Inspect · Start the engine from dead cold with the bonnet open. Listen closely to the timing cover side for a distinct metallic rattle lasting 3-5 seconds.
Paint and trim durability on earlier cars
Inspect · Inspect the paint finish in daylight
Damp boot carpet and musty interior smell caused by water ingress through rear light cluster seals.
Inspect · Lift the boot floor carpet and inspect the spare wheel well for standing water, dampness, or rust stains around the seams.
Clutch wear on ex-learner cars
Inspect · Test the bite point on an incline
Infotainment screen freezing, random rebooting, or reversing camera displaying a blank screen.
Inspect · Engage reverse gear to verify the camera feed appears instantly. Tap through the touchscreen menus and plug in a smartphone to test Apple CarPlay stability.
Knocks and rattles from bushes and links
Inspect · Drive over rough surfaces and listen
Heavy steering feel, whining noise from the PAS pump, and hydraulic fluid leaks.
Inspect · Check the PAS fluid reservoir level, then turn the steering wheel lock-to-lock while stationary with the engine running, listening for excessive groaning or whining.
Oil consumption and rough running on the 1.5 petrol
Inspect · Check the oil level and idle quality
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.