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Blue smoke from the exhaust on a Vespa GTS 300 2026

Is your Vespa GTS 300 2026 showing "Blue smoke from the exhaust"? Here's the most likely cause, the checks to run, and the parts that fit your bike.

Technical bulletin

Vespa GTS 300 2026 — owner breakdown

The Vespa GTS 300 2026 is small-displacement 278cc four-stroke machine, catalogued from 2009 to 2026. Checks below are ordered for this bike.

Engine
278 cm³ · four-stroke
Category
small-displacement
Production years
2009–2026
Newest model year
2026

Catalog data and community feedback — indicative markers, not a workshop manual.

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⚠️ This tool helps you understand what's going on with your motorcycle; it doesn't replace the inspection or judgment of a certified mechanic. If in persistent doubt, if a safety-critical part is involved (braking, steering, bearings, transmission), or if the problem keeps recurring, have the diagnosis confirmed at a workshop before doing any work.

How to Fix Blue smoke from the exhaust on a Vespa GTS 300 2026 | Step-by-Step Guide · MotoDiagnostic