Yamaha NMAX 155 (2015-2022): The Agile Urban Companion That Redefined Scooter Expectations

Introduction

The Yamaha NMAX 155 emerged in 2015 as a game-changer in the urban mobility segment, blending sporty aesthetics with practical engineering. Over its seven-year production run, this scooter solidified its reputation as a versatile workhorse for city commuters and weekend explorers alike. With its liquid-cooled engine, nimble chassis, and tech-forward features, the NMAX 155 became a benchmark for 150cc-class scooters. After spending a week weaving through traffic and testing its limits on winding roads, it's clear why this Yamaha remains a favorite among riders who demand both efficiency and excitement.

Design & Ergonomics: Where Sport Meets Practicality

Yamaha's "Sports Urban" design philosophy shines through the NMAX's sharp lines and muscular proportions. The angular LED headlight cluster (on later models) gives it a futuristic edge, while the stepped dual-tone seat maintains a sporty profile without sacrificing comfort. At 765mm (30.1"), the seat height accommodates riders from 5'5" to 6'0" with ease, and the floorboard provides generous legroom for taller riders.

The cockpit layout deserves praise – the analog-digital combo display remains visible in direct sunlight, showing fuel level, clock, twin trip meters, and a handy eco indicator. Underseat storage (22L capacity) swallows a full-face helmet with room to spare, a rarity in this class. Color options like Midnight Black and Icon Blue give the scooter premium appeal, though the matte finishes hide urban grime particularly well.

Engine & Performance: Liquid-Cooled Sophistication

Beating at the heart of the NMAX is Yamaha's 155cc Blue Core engine – a liquid-cooled, SOHC 4-valve marvel that punches above its weight class. Producing 14.9 HP @ 8,000 RPM and 14.4 Nm (10.6 lb-ft) of torque @ 6,000 RPM, this engine delivers a perfect balance of low-end grunt and top-end refinement. The real magic happens between 40-90 km/h (25-56 mph), where the engine feels most alive, pulling strongly up hills and overtaking traffic with confidence.

Key technical advantages: - Liquid cooling maintains optimal temps in stop-and-go traffic - V-Belt Automatic transmission offers seamless power delivery - 10.5:1 compression ratio balances performance and fuel efficiency - 6.6L (1.74 gal) tank provides 220-250 km (137-155 mi) range

The exhaust note has a pleasant thrum under acceleration but settles into a near-silent hum at cruising speeds. Fuel injection ensures crisp throttle response – twist the grip in Sport mode (available on certain markets), and the CVT ratio holds revs longer for spirited riding.

Ride & Handling: Carving Corners Like a Pro

Yamaha's chassis engineers nailed the geometry here. The 1350mm (53.1") wheelbase strikes a perfect balance between agility and stability, while the 26° rake angle and 92mm (3.6") trail make for quick yet predictable steering. The 13-inch wheels (110/70 front, 130/70 rear) roll over potholes with composure rare in scooters, thanks to the 110mm (4.3") front suspension travel.

During aggressive cornering, the NMAX displays surprising poise. The telescopic forks and rear monoshock (with 84mm/3.3" travel) manage weight transfer beautifully, allowing you to carry speed through bends. Ground clearance of 135mm (5.3") lets you scrape the center stand before touching hard parts – a reassuring safety margin.

Braking performance impresses most. The 230mm front disc with ABS (standard post-2018) provides strong initial bite, while the rear disc offers progressive feel. In panic stops from 60 km/h (37 mph), the ABS intervenes smoothly without unsettling the chassis.

Technology & Features: Smarter Than Your Average Scooter

Yamaha packed the NMAX with premium features: - Dual-channel ABS (later models) - Smart Key System (keyless ignition/fuel cap) - Adjustable rear shock (selected markets) - USB charging port - LED lighting package (headlight, taillight, position lights)

The ABS deserves special mention – during wet road testing, it prevented wheel lockup without excessive pulsing through the lever. The Smart Key System adds a touch of luxury, allowing riders to start the engine and open the fuel cap without fumbling for keys.

Competition: How the NMAX Stacks Up

The 150cc scooter segment is fiercely competitive. Here's how Yamaha's contender fares:

Honda PCX 150
- Pros: Slightly larger underseat storage, lower seat height
- Cons: Air-cooled engine lacks top-end power, no ABS on base models
Verdict: The NMAX's liquid cooling and ABS give it the edge for performance-oriented riders.

Suzuki Burgman Street 125 EX
- Pros: Class-leading wind protection, electric screen (optional)
- Cons: Heavier at 137kg (302 lbs), smaller engine
Verdict: The Yamaha feels sportier and more agile in urban environments.

Vespa Primavera 150
- Pros: Iconic styling, steel monocoque chassis
- Cons: Price premium, shorter suspension travel
Verdict: The NMAX offers better value for tech-focused buyers.

Maintenance: Keeping Your NMAX in Peak Condition

As MOTOPARTS.store's resident technician, here's my maintenance playbook:

Critical Service Intervals
- Engine Oil: Every 4,000 km (2,485 mi) or 6 months
Recommend: Yamalube 10W-40 Semi-Synthetic (900ml with filter)
- Drive Belt: Inspect every 8,000 km (4,970 mi)
Upgrade Tip: Consider a Kevlar-reinforced belt for longer life
- Coolant: Replace every 24,000 km (14,900 mi)
Pro Tip: Use ethylene glycol-based coolant mixed 50:50 with distilled water

Common Wear Items
- Brake Pads: EBC FA229 sintered pads improve bite
- Tires: Michelin City Grip 2 offers wet weather confidence
- Air Filter: K&N washable filter reduces replacement frequency

Performance Upgrades
- Suspension: YSS shocks transform cornering stability
- Exhaust: Arrow stainless steel system adds 1.5HP
- Lighting: PIAA LED auxiliary lights enhance night visibility

The Verdict: A Modern Classic

The Yamaha NMAX 155 isn't just transportation – it's a statement about how urban mobility should feel. The combination of liquid-cooled performance, agile handling, and smart features creates a package that's greater than the sum of its specs. While rivals may excel in specific areas, the Yamaha delivers the most complete experience in its class.

For owners looking to personalize or upgrade their NMAX, MOTOPARTS.store offers an extensive range of performance parts and accessories. From premium brake components to custom body kits, we've got everything to make your Yamaha truly yours.

Featured image credits: Yamaha Motor Corporation. All other images available in MOTOPARTS.store media library.

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