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Smart Vehicle Directory

Browse 6 Smart models with generation timelines, common problems, MOT trends, and live vehicle lookups.

Common Smart Reliability Insights

SAM Unit Water Damage: Water ingress into the Signal Acquisition and Management (SAM) unit causes catastrophic electrical failures.
Engine Longevity (600/700cc): These tiny engines often require a top-end rebuild between 60,000 and 80,000 miles due to piston ring wear.
Three Bars of Death: A common gearbox fault display indicating a failure in the gear selection or clutch actuation system.
MHD Belt Failure (451): On Mild Hybrid Drive models, the drive belt can snap, leading to instant overheating and engine damage.
Water Ingress (Roadster): Almost all Roadsters leak to some degree, which can destroy the dash-mounted electronics and SAM.

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