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GWM Tank 300: Common Problems & Reliability Guide (South Africa)

Also covers: Tank 300 Diesel, Tank 300 HEV

Real, sourced data · last reviewed 2026-09-07
30+ years of practical automotive experience behind these reports - our sourcing methodology

These are issues documented for the GWM Tank 300 in general - things to check for, not a diagnosis of any particular car. Whether a specific car has one depends on its age, mileage, service history and how it was used.

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Throttle Calibration & ADAS Complaints, Plus HEV Wiring Harness Recall (Australia)

Drivetrain calibration / ADAS / Exterior build quality (finding 1); High-voltage electrical system, hybrid powertrain (finding 2, HEV variant only) · severity: Moderate for finding 1 - a real, sourced drivability annoyance and durability concern, not a safety-critical or vehicle-disabling fault. Higher for finding 2 - GWM's own Australian recall filing uses explicit safety language ('could increase the risk of an accident, causing serious injury or death') if the wiring defect is present and unaddressed, though this is a manufacturing-defect population issue with a free, confirmed remedy path once identified, not a wear-driven failure. · confidence: 48/100 · 3 cited sources
Applies to: 2.4L turbodiesel, 135kW/480Nm / 2.0T petrol (naturally aspirated turbo), 167kW/387Nm / 2.0T HEV petrol-hybrid, 255kW/648Nm combined, 9-speed automatic (HAT) - not every engine this model has been sold with
ⓘ Not yet individually classified

Symptoms to watch for

  • Real, SA-sourced (AutoTrader SA): noticeable throttle lag at intersections and during overtaking, followed by an abrupt lurch as all torque is deployed once more pedal pressure is applied - described as requiring a driver adjustment period
  • Real, SA-sourced: Lane Keep Assist and forward collision warning triggering false dashboard warnings ('sensor hypersensitivity')
  • Real, SA-sourced: exterior plastics and trim pieces fading or loosening over time under South African climate exposure
  • Real, SA-sourced: extended parts-importation delays (several weeks) for major body panels, specialised electronics, or niche components sourced directly from China
  • Finding 2 (HEV variant only, per GWM's own real recall filing): illuminated warning lights, reduced vehicle torque, and reduced hybrid-system cooling performance if the wiring harness defect is present and unaddressed

What To Check

Finding 1 is genuinely test-drive-detectable - pull-away throttle response and ADAS false-warning behaviour can both be directly assessed, and exterior trim condition is a visual inspection item. Finding 2 (the HEV wiring harness defect) is NOT detectable through inspection or a normal test drive - it is an internal, manufacturing-level fault whose only reliable check is a VIN-based dealer recall/inspection lookup, consistent with how this knowledge base has treated the mechanically similar P500 EPS wiring recall.

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This guide summarises documented, sourced findings for the GWM Tank 300 generally. It is not an assessment of any specific vehicle - mileage, service history and condition vary by example. A full AutoLytiQs™ report checks a specific listing for sale against this data plus a live South African market valuation, to tell you whether that exact vehicle is a good buy.

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