Aprilia Sonic Gp 50 vs Yamaha CA50M (1999)

Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Aprilia Sonic Gp 50stacks up against the Yamaha CA50M. Numbers pulled from manufacturer spec sheets — click either bike for the full review.

Spec comparison

SpecAprilia Sonic Gp 50Yamaha CA50M
Model year19991982
Price$2,150
Engine49 cc49 cc
Weight105 kg
Fuel capacity2.1 L1.0 L
Fuel typepetrolpetrol
TransmissionAutomaticAutomatic
Front brakesSingle disc. 155m with hydraulic transmissionExpanding brake (drum brake)
Rear brakesExpanding brake (drum brake). drum brake,110 m with mechanic transmissionExpanding brake (drum brake)

Aprilia Sonic Gp 50 vs Yamaha CA50M — which should you buy?

Picking between the Aprilia Sonic Gp 50 and the Yamaha CA50M usually comes down to the numbers you care about most. On paper, the Aprilia Sonic Gp 50 brings its published horsepower in a 105 kg package, while the Yamaha CA50M counters with its own power figure.

Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: