AI
Sym
ADX 300
Scooter · 278 cc
For sale now5 motorcycles
- Engine
- 278 cc
- Power
- 28 hp
- Weight
- 189 kg
- Price range
- €5,819 – €5,999
- Avg. mileage
- 0 km
- Common year
- 2026 · 5 motorcycles
This text was partly made with AI and may contain errors.
What should you pay for a ADX 300?
See typical prices, price changes and important differences.
A typical asking price is between €5,819 and €5,999
Below €5,819, the price is low. Above €5,999, the price is high. Check the year, mileage, version and maintenance.
- Typical asking price
- €5,999
- Current prices compared
- 5
This is a guide based on asking prices, not confirmed sale prices.
Price trend
Based on price data from 4 of the past 12 months.
Used prices have held steady since June 2026.
Model family
ADX 300 at a glance
Quick reference values. Model year, generation and trim can differ.
Displacement
278 cc
Power
28 hp · 21 kW
Torque
26 Nm
Category
Scooter
Specifications
- Displacement
- 278 cc
- Power
- 28 hp · 21 kW
- Torque
- 26 Nm
- Weight
- 189 kg
- Seat height
- 790 mm
- Fuel capacity
- 12 l
- Top speed
- 135 km/h
- Production
- 2021 – present
- Category
- Scooter
Comparable models
Also worth considering
Models in the same category and price range to consider alongside the ADX 300.
Generations and editions
Features and handling differ by generation. Use this overview to find the right version.
1 variants
Years
2021 - present
ADX 300
GenerationThis technical reference row for the ADX 300 combines the available catalogue data: 278 cc, 21 kW, 28 hp, 189 kg. It describes the model reference, but does not necessarily distinguish every production or equipment change. Always verify model year, trim and technical values against the individual motorcycle.
278 cc28 hp
About this model
About the Sym ADX 300
The SYM ADX 300 is an adventure maxi-scooter from Taiwanese brand SYM, positioned as a city scooter with a light off-road edge. The engine is a 278 cc water-cooled single with EFI, producing around 28 hp. The steel tube frame combined with a 19-inch front wheel (on the Adventure version) delivers more stability on light unpaved surfaces than standard maxi-scooters. Practicality is a strong suit: under-seat storage and a large instrument cluster are standard.
The ADX 300 targets A2 licence holders who commute daily but enjoy excursions outside the city. Seat height is around 790 mm, slightly taller than a standard maxi-scooter. As an alternative to the Honda X-ADV, Yamaha TMAX and Kymco AK 550 it offers a lower purchase price and a comparable riding profile. The brand has a growing dealer network in Europe.
- Category
- Scooter
- Production
- 2021 – present
- Power
- 28 hp
- Weight
- 189 kg
Before you buy
What to check before buying
- Check the CVT belt for wear; at higher mileages, belt replacement is a preventive maintenance item.
- Inspect the seat lock mechanism for corrosion; the storage compartment draws moisture if the lock does not seal properly.
- Check parts availability; SYM has a thinner dealer network than Yamaha or Honda.
- Inspect the ABS module for correct operation on models equipped with anti-lock braking.
Frequently asked questions
Frequently asked questions about the Sym ADX 300
What does a used Sym ADX 300 cost?
A used Sym ADX 300 costs €5,999 on average. Most cost €5,819 to €5,999. This is based on 5 motorcycles for sale now.
How many used Sym ADX 300 are for sale?
MotorMonitor now compares 5 used Sym ADX 300 motorcycles from Dutch sales sites.
What year and mileage does an average used Sym ADX 300 have?
The average used Sym ADX 300 is from 2026 and has done about 0 km.