Naked // Manual // 2024 // CBT Legal
Suzuki
GSX-S125
The lightest 125 you can buy.
Power
15 bhp
Weight
134kg
Top Speed
80 mph
From New
£3,899
Profile silhouette
17" cast aluminium · seat 785 mm
Colour palette
- Triton Blue
- Glass Sparkle Black
- Brilliant White
Range & economy
At 134kg wet, the GSX-S125 is the lightest learner-legal naked you can buy in the UK. That weight advantage translates to genuinely sharp handling and a fuel economy figure that surprises everyone.
Who it's for
Smaller and lighter riders who want a proper sportbike feel without the supersport ergonomics. Excellent for nervous first-timers.
Pros
- Lightest 125 naked on sale
- Excellent fuel economy
- Suzuki reliability
- Sharp handling
Cons
- Suzuki UK dealer network smaller than Honda or Yamaha
- Styling polarising
- Limited factory accessories
Suitability
commuter
7/10
sport
7/10
comfort
6/10
value
7/10
style
6/10
Full Specifications
- Engine
- Single-cylinder, 4-stroke, DOHC, 4-valve, liquid-cooled
- Displacement
- 124cc
- Power
- 15 bhp @ 10,000 rpm
- Torque
- 8.1 lb-ft @ 8,000 rpm
- Top speed
- 80 mph
- Fuel economy
- 117 mpg
- Fuel capacity
- 11 litres
- Weight
- 134 kg (wet)
- Seat height
- 785 mm
- Transmission
- 6-speed manual
- ABS
- Dual-channel ABS
- Brakes
- Front: 290mm disc. Rear: 187mm disc.
- Suspension
- Front: telescopic forks. Rear: monoshock.
- Wheels & tyres
- 17" cast aluminium
- Service interval
- 7,500 miles / 12 months
- Warranty
- 2 years unlimited mileage
- Insurance group
- Group 10
- Available colours
- Triton Blue, Glass Sparkle Black, Brilliant White
- Price new
- £3,899
- Price used
- £2,500 – £3,200
- CBT legal?
- Yes
- Keepable post-licence?
- No — learners only
True cost of owning a GSX-S125
Estimates for a 25-year-old with one year of CBT licence holding, riding 4,000 miles a year in Zone 2 London. Adjust for your own circumstances.
insurance
£500 / year (third-party fire & theft, 25 yr old, London)
tax
£25 / year (motorcycles ≤150cc)
mot
£29.65 / year (compulsory from year 3)
fuel
~£225 / year at 4,000 mi (£1.45/L)
service
~£165 / minor service
Day-one essentials
ECE 22.06 full-face helmet
£120 – £400
CE Level 2 armoured jacket
£150 – £350
Disc lock + reminder cable
£35 – £75
Sold Secure Gold chain + ground anchor
£90 – £180
Tail-pack 25L
£75 – £160
All-weather cover + bike socks
£30 – £80
Best for
- Lighter riders
- Nervous first-timers
- Long commutes
Insider trivia
- — Shares its engine with the now-discontinued GSX-R125 faired sibling.
- — Won UK Best Learner Bike at MCN Awards 2018 and 2019.
- — Built in Indonesia.
Owner FAQs
- Can I ride the GSX-S125 on a CBT?
- Yes — the Suzuki GSX-S125 is fully CBT-legal in the UK. With L-plates and a valid DL196 you can ride it for two years before progressing to A1, A2, or full A.
- What licence do I need to take L-plates off the GSX-S125?
- You need an A1 (17+), A2 (19+) or full A (24+) licence and Module 1 / 2 pass — this 125 itself is restricted to learners.
- Is the GSX-S125 reliable?
- Suzuki has a 2 years unlimited mileage warranty on the GSX-S125. Shares its engine with the now-discontinued GSX-R125 faired sibling.
- What is the real-world range?
- Claimed economy is 117 mpg and the tank is 11 litres, giving a theoretical range of 283 miles. Real-world budget around 80% of that.
- What insurance group is the GSX-S125?
- Group 10. As a rough guide, a 25-year-old in zone 2 London with no claims pays around £500 per year third-party fire & theft.
- Is the GSX-S125 good for delivery / courier work?
- It's possible, but a scooter like the PCX 125 or SH125i is the standard courier choice. Manual gearboxes slow down stop-start delivery work.
Browse all CBT-legal 125s
Don't have your CBT yet?
You need a valid DL196 certificate before you can legally ride the GSX-S125 on UK roads.
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