Aprilia Sr 50 vs Yamaha Nmax 155
Side-by-side comparison for used motorcycle buyers
Aprilia Sr 50 vs Yamaha Nmax 155. Aprilia Sr 50: ~4 hp @ 7,500 rpm (restricted; note: earlier two-stroke variants produced up to ~6.7 hp unrestricted) hp, ~105 kg (wet/curb weight; varies slightly by generation) weight, top speed 45 km/h (restricted, as legally required in most EU markets; de-restricted can reach ~75 km/h), Motoryk rating 7.0/10. Yamaha Nmax 155: 15.1 hp @ 8,000 rpm hp, 127 kg (wet/curb weight) weight, top speed 125 km/h, Motoryk rating 7.8/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Aprilia Sr 50
Yamaha Nmax 155
Horsepower (hp)
4 hp
15.1 hp
Torque (Nm)
4 Nm
13.9 Nm
Top Speed (km/h)
45 km/h
125 km/h
Weight (kg) — lower is better
105 kg
127 kg
Type
Scooter
Scooter
Horsepower
~4 hp @ 7,500 rpm (restricted; note: earlier two-stroke variants produced up to ~6.7 hp unrestricted)
15.1 hp @ 8,000 rpm
Torque
~4 Nm @ 6,000 rpm (estimated; varies by generation and engine type)
13.9 Nm @ 6,500 rpm
Top Speed
45 km/h (restricted, as legally required in most EU markets; de-restricted can reach ~75 km/h)
125 km/h
Weight
~105 kg (wet/curb weight; varies slightly by generation)
127 kg (wet/curb weight)
Fuel
2.0–2.5 L/100km (approximately 40–50 km/L, typical real-world average for 50cc scooter)
2.4 L/100km or approximately 41 km/L (typical real-world average)
Fairing
Yes
Yes
Individual Reviews
Aprilia Sr 50
7.0/10
"Buy it clean or budget hard for immediate mechanical work."
Pros
+Razor-sharp Italian styling
+Excellent suspension setup
+Strong parts availability
Cons
−Teenage abuse almost guaranteed
−Variator wears quickly
−Carb jetting notoriously temperamental
Yamaha Nmax 155
7.8/10
"A smart, reliable urban weapon if you buy carefully."
Pros
+Bulletproof Blue Core engine
+Excellent underseat storage
+Composed, planted handling
Cons
−Front forks leak when neglected
−Plastics scratch embarrassingly easily
−Pillion comfort is mediocre
Top 10 Accessories
Picks that work on either bike.
