Yamaha YZF-R125
Yamaha's race-styled 125 — same engine as the MT-125 wrapped in R-series sport bodywork. 14.7 PS, deltabox frame, clip-on bars, racy ergonomics. The default choice for 17-year-olds who want a proper sport bike experience before their A license. Drops on track days are inevitable; fairing panels are cheap.
- Engine
- 124 cc
- Power
- 14.7 PS
- Weight
- 144 kg
- Seat height
- 825 mm
- A2 licence
- —
Liquid-cooled DOHC single with VVA
wet
The short version
Forecourt score
Value 50 · Insurance 56 · Theft 35
The Yamaha YZF-R125 holds its value about as well as most bikes (around 30% lost over three years, against the 25-32% bike norm) and costs about average to insure (group 8). Theft risk is high.
A bike-specific blend of value retention, insurance and theft risk (weighted 40/35/25). Bikes carry no MOT reliability data, so reliability isn't scored. Higher is better.
Variant: YZF-R125
Engine
Petrol · 124cc
Power
14.7 ps
Torque
11.5 Nm
Weight
144 kg
Seat
825 mm
Transmission
6-speed manual
Economy
88 mpg
Volume YZF-R125. Same VVA 125 as MT-125 but in sport fairing, clip-ons, deltabox frame. 144 kg wet. 825mm seat — tall for a 125.
Tell us about the one you're looking at
Tidy and well looked-after for its age — the typical clean bike.
Estimated market value
£3,534
Range £3,181 – £3,887
HIGH CONFIDENCE
Holding value
Bikes hold value far better than cars — typical motorcycle 3-year depreciation is 25–32%, against cars' 40–50%. Some bikes (Hayabusa, Gold Wing, classic Z1000) actually appreciate in the 7–15 year zone as cult demand outstrips supply.
New
£5,299
At 5 years
£3,126
At 10 years
£1,987
Value loss by phase
Each band shows the share of original value lost during that window — not cumulative. Appreciation (green, marked +X% gained) is real for bikes that develop cult status.
UK new price by year
How we estimate this
Phase depreciation derived from observed UK used-bike pricing — classified ads, dealer asking prices, and end-of-auction figures. Bike residuals depend heavily on theft history, service-stamp count, and crash-damage signatures. The figures here are indicative for clean, fully-stamped examples.
What it costs to own
Indicative running costs at 8,000 miles a year — the UK rider average. Chain-drive bikes carry a chain/sprocket consumable line; tax (typically £25–£100/yr) and depreciation are excluded — see the section above for value retention.
3-year total
£2,892
Per year
£964
Per mile
£0.12
Service costs assume independent specialist labour and OE parts. Tyre intervals reflect typical UK road riding — track-day usage burns through rear tyres in <2,000 miles. Fuel uses the variant MPG at £1.45/L. Lower-mileage riders see proportionally lower totals; higher-mileage commuters pay roughly linearly more.
Estimated insurance
Group 8 of 17 (mid — mainstream) · Comprehensive · 5 yr NCB
Indicative annual comprehensive premiums for this bike. Bike insurance is far more sensitive to licence tier and rider age than cars — pick the combination closest to your circumstances.
Licence
Age
No-claims bonus
5 yearsRisk profile
Estimated annual premium · typical, age 30-39
£420/ year
Roughly £35 per month
Typical
Suburban postcode, 3+ years NCB, standard security (Thatcham chain + disc lock), no recent claims.| Age band | Lower risk | Typical | Higher risk |
|---|---|---|---|
| Age 17-21 | £693 | £924 | £1,294 |
| Age 22-29 | £425 | £567 | £794 |
| Age 30-39Selected | £315 | £420 | £588 |
| Age 40-49 | £277 | £370 | £517 |
| Age 50+ | £252 | £336 | £470 |
How we estimate this
Premiums combine licence tier, rider age, no-claims bonus and a risk-profile multiplier on top of a bike-specific baseline. Bike insurance is materially more sensitive to licence tier (CBT / A1 / A2 / A) than car insurance, and young riders pay considerably more than older riders even on the same machine. Always get individual quotes before buying.
Theft risk
Bike-specific · Met Police + insurance reporting
UK bike theft rates are an order of magnitude higher than car theft. Nakeds and supersports lose more to professional gangs; large adventure bikes and tourers are statistically much safer.
Theft risk score · 1 to 4
3/4High risk
High risk
Frequent theft target — appears regularly on UK police hot-lists, especially in London. Expect insurers to demand Thatcham chain + ground anchor + disc lock; tracker can knock 10–15% off premium.Theft hotspot postcodes
Postcode prefixes only; full London hot zone runs across E, N, NW, SE, SW, W boroughs depending on the model.
What this means for you
Sport 125s are theft magnets in London. Lightweight, easy to lift into a van. Thatcham chain + disc lock + ground anchor essential to keep insurance reasonable.
How we set this band
Bands derived from Met Police bike-theft reporting (most-stolen lists) cross-referenced with insurance industry underwriting data. Model + postcode are the two biggest factors in motorcycle theft risk in the UK, materially more than vehicle value.
What goes wrong
5 known issues · sorted by severity
Documented failure modes from UK owner forums, dealer service bulletins, and aggregated mechanic feedback. Mileages are approximate — different riders see different intervals depending on use and maintenance. Always address "high"-severity items before resale.
High severity
0
Medium
3
Low / cosmetic
2
| Severity | Part / issue | Cost |
|---|---|---|
| medium | Drop damage (fairings/levers/bars) Expected — buy aftermarket panels any | £200-400 |
| medium | Chain/sprocket wear 15-18k mi | £250 |
| medium | Cam chain tensioner (pre-2020) any | £200 |
| low | Fork seals 20k+ mi | £100 |
| low | Fairing tab cracks after drops | £40 epoxy repair |
How we score severity
High — strands the bike or causes consequential damage if left. Medium — service item that affects ride quality or risks failure. Low — cosmetic or minor inconvenience. Costs are independent-specialist UK rates for parts and labour together; main dealer prices typically run 30–50% higher.
Safety recalls
Manufacturers occasionally issue safety recalls to fix a fault free of charge. You can check whether the Yamaha YZF-R125, or your exact vehicle, has any outstanding recalls on the official DVSA service.
Check on GOV.UKOpens the Driver & Vehicle Standards Agency recall checker. Choose the make, model and year of manufacture — no registration needed.
Variant comparison
The default A1 sport bike. Cross-shop KTM RC 125 (sharper, harder ride), Aprilia RS 125 (sportiest, most fragile), Honda CBR125R (mellow, cheaper). YZF-R125 wins on engine refinement and parts availability.
Known issues
- Drop damage — replacement fairings £200-400
- Faster sprocket wear than MT-125 (sportier riding)
- Same cam chain tensioner pre-2020 (Yamaha fix)
- Fork seals at 20k+ mi (£100)
- Fairing tabs crack — common after drops
Strengths
- +Same VVA engine as MT-125 — punchy 125cc
- +Deltabox frame + USD forks — proper sport hardware
- +R-series styling — looks like a baby R1
- +Track-day friendly geometry
- +Strong used market — young riders buy them then move up
Watch-outs
- −Clip-on bars + low seat = uncomfortable for tall riders
- −Drops are common — replacement fairings £200-400
- −Sport tyres last 5-7k mi (more expensive than commuter rubber)
- −Same cam chain tensioner pre-2020 issue as MT-125