How much is a used KTM 125 Duke worth?

A 2023 KTM 125 Duke in good condition with around 9,000 miles is worth roughly £3,350 (typical range £3,000–£3,700). Dealer asking prices sit higher than private sales, and a full service history, no crash damage and an unbroken theft record are what hold a bike at the top of its range.

How quickly does the KTM 125 Duke depreciate?

We don't yet hold model-specific depreciation for the KTM 125 Duke. Our default estimate for machines of this kind is a loss of about 30% over three years, against a 25–32% norm for bikes generally — treat it as a starting point rather than a measurement of this model. Bikes hold value considerably better than cars, which typically lose 40–50% over the same period.

Can you ride the KTM 125 Duke on an A2 licence?

The KTM 125 Duke is an A1 machine, so it suits a 17-plus rider on an A1 licence and is also available to anyone with A2 or full A entitlement.

How much does it cost to insure a KTM 125 Duke?

Expect around £290 a year to insure a KTM 125 Duke, typically £210–£440. That assumes age 18-19 CBT, no NCB, urban postcode. Bike premiums move far more on licence tier, rider age and postcode than car premiums do, so treat this as a starting point rather than a quote.

What goes wrong on a used KTM 125 Duke?

The wear and failure points we track for the KTM 125 Duke are: chain & sprockets (around 8-12k mi, £140); front brake pads (around 6-9k mi, £60-80); battery (around every 3 years, £70-90). We don't publish a reliability score for bikes — the MOT dataset behind our car scores doesn't support one at model level — so treat these as the specific things to inspect rather than a verdict. A full service history and a fresh MOT without advisories remain the best protection.

What does a KTM 125 Duke cost to run?

Expect around 110 mpg, about £198 a year in fuel or energy, £180 for an annual service, £170 a pair for tyres every 7,000 miles, £180 for a chain and sprockets every 18,000 miles. Figures assume 3,000 miles a year, the UK average from DfT travel and traffic statistics, and current DESNZ pump prices. The cost-of-ownership table on the profile breaks this down per year and per mile.

Is the KTM 125 Duke likely to be stolen?

The KTM 125 Duke is a moderate theft target. Premium 125, popular with young riders — joyride target. KTM electronics make hot-wiring harder than older bikes; chain + disc lock essential. Theft is concentrated in E, N, SE, SW postcode areas. A Thatcham-approved chain and ground anchor, a disc lock and a tracker are what insurers look for, and secure overnight storage moves a premium more than almost anything else.

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LearnerLicense A1 (16+)3,400/yr UK

KTM 125 Duke

KTM's 125cc roadster, the entry point to the Duke family. Shares the central chassis with the 390 Duke, so it punches above its weight on handling. 14.75bhp single, 6-speed, A1 license. The 2024 update added a 5-inch TFT dash, new frame, and Euro5+ ready engine — bringing the spec up to that of bikes costing significantly more. Sporty riding position and aggressive looks make it popular with CBT graduates who want a sportbike feel without the 125 sportbike posture.

Engine: 124 cc
Power: 14.75 PS
Weight: 159 kg
Seat height: 820 mm
A2 licence: —

The short version

66/100

Forecourt score

Value 50 · Insurance 84 · Theft 65

The KTM 125 Duke is cheap to insure (around £290/yr typical). Theft risk is moderate. The main thing to check on a used one is the throttle body sensor. We don't yet hold model-specific depreciation for the KTM 125 Duke; our default estimate is around 30% lost over three years.

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. The value pillar uses our default estimate for this bike, not a model-specific figure.

Variant: 125 Duke

Engine

Petrol · 124cc

Power

14.75 ps

Torque

12 Nm

Weight

159 kg

Seat

820 mm

Transmission

6-speed manual

Economy

110 mpg

2024-on 125 Duke — new frame, 5-inch TFT, Euro5+ engine. WP suspension, Bosch ABS, 17-inch wheels. Same chassis as the 390 Duke. 820mm seat tall for short riders. 13.5L tank.

Tell us about the one you're looking at

Year of registration2023

20172026

Mileage on the clock9,000 mi

0Expected: 9,00060k

Conditiongood

PoorFairGoodExcellent

Tidy and well looked-after for its age — the typical clean bike.

Estimated market value

£3,359

Range £3,023 – £3,695

HIGH CONFIDENCE

When new (2023)£4,799

Age-based value£3,359

Mileage adjustment+£0

Condition adjustment+£0

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

£4,999

At 5 years

£2,999

At 10 years

£2,100

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.

Years 0–3First-owner depreciation30% lost

Years 3–7Used-market sweet spot18% lost

Years 7–15Stable / vintage-cult zone26% lost

After year 3: 70% retainedAfter year 7: 52% retainedAfter year 15: 26% retained

UK new price by year

How we estimate this

We don't yet hold model-specific depreciation for this bike. The figures above are our default estimate for machines of this kind, currently applied to 34 models in the catalogue — treat them as a starting point, not a measurement of this model. Bike residuals depend heavily on theft history, service-stamp count and crash-damage signatures. Figures assume a clean, fully-stamped example.

What it costs to own

Over

Indicative running costs at 3,000 miles a year — the UK average from DfT travel and traffic statistics. 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

£1,532

Per year

£511

Per mile

£0.17

Servicing£540

Tyres (pair)£219

Chain & sprockets£90

MOT£89

Fuel / energy£594

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 the current DESNZ pump price of £1.60/L (week commencing 03/08/2026). Electric bikes are costed from battery capacity and published range at the current domestic electricity price; where a bike has no published range we show no energy line rather than guess. Lower-mileage riders see proportionally lower totals; higher-mileage commuters pay roughly linearly more.

Estimated insurance

ABI motorcycle scheme · 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 years

0 yearsBaseline: 5 years15+

Risk profile

Estimated annual premium · typical, age 30-39

£290/ year

Roughly £24 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	£479	£638	£893
Age 22-29	£294	£392	£548
Age 30-39Selected	£218	£290	£406
Age 40-49	£191	£255	£357
Age 50+	£174	£232	£325

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

2/4Medium risk

1 — Low2 — Medium3 — High4 — Very high

Medium risk

Some theft pattern, particularly in urban postcodes. Thatcham-approved chain plus disc lock recommended; secure overnight parking helps premiums.

Theft hotspot postcodes

ENSESW

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

Premium 125, popular with young riders — joyride target. KTM electronics make hot-wiring harder than older bikes; chain + disc lock essential.

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

Medium

Low / cosmetic

Severity	Part / issue	Typical mileage	Cost
high	Throttle body sensor Causes stall at idle if it fails — known KTM small-single issue 15k+ mi	15k+ mi	£250
medium	Chain & sprockets Aggressive gearing wears the chain faster than rivals 8-12k mi	8-12k mi	£140
low	Front brake pads 6-9k mi	6-9k mi	£60-80
low	Battery every 3 years	every 3 years	£70-90
low	TFT dash software glitches Early 2024 bikes saw occasional dash freezes — KTM fix applied any	any	warranty

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 KTM 125 Duke, or your exact vehicle, has any outstanding recalls on the official DVSA service.

Check on GOV.UK

Opens the Driver & Vehicle Standards Agency recall checker. Choose the make, model and year of manufacture — no registration needed.

Strengths

+Shares chassis with 390 Duke — class-leading handling for a 125
+WP suspension, Bosch ABS standard — proper premium spec
+5-inch TFT dash on 2024+ bikes
+Sporty aggressive style that scales up to the bigger Dukes
+13.5L tank — generous for a 125

Watch-outs

−820mm seat tall for shorter or new riders
−KTM service costs above Honda/Yamaha equivalents
−Throttle body sensor failures known on KTM small singles
−Aggressive riding position less comfortable on long commutes

Value this bike All bikes

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Common questions

KTM 125 Duke, answered from the data

How much is a used KTM 125 Duke worth?: A 2023 KTM 125 Duke in good condition with around 9,000 miles is worth roughly £3,350 (typical range £3,000–£3,700). Dealer asking prices sit higher than private sales, and a full service history, no crash damage and an unbroken theft record are what hold a bike at the top of its range.
How quickly does the KTM 125 Duke depreciate?: We don't yet hold model-specific depreciation for the KTM 125 Duke. Our default estimate for machines of this kind is a loss of about 30% over three years, against a 25–32% norm for bikes generally — treat it as a starting point rather than a measurement of this model. Bikes hold value considerably better than cars, which typically lose 40–50% over the same period.
Can you ride the KTM 125 Duke on an A2 licence?: The KTM 125 Duke is an A1 machine, so it suits a 17-plus rider on an A1 licence and is also available to anyone with A2 or full A entitlement.
How much does it cost to insure a KTM 125 Duke?: Expect around £290 a year to insure a KTM 125 Duke, typically £210–£440. That assumes age 18-19 CBT, no NCB, urban postcode. Bike premiums move far more on licence tier, rider age and postcode than car premiums do, so treat this as a starting point rather than a quote.
What goes wrong on a used KTM 125 Duke?: The wear and failure points we track for the KTM 125 Duke are: chain & sprockets (around 8-12k mi, £140); front brake pads (around 6-9k mi, £60-80); battery (around every 3 years, £70-90). We don't publish a reliability score for bikes — the MOT dataset behind our car scores doesn't support one at model level — so treat these as the specific things to inspect rather than a verdict. A full service history and a fresh MOT without advisories remain the best protection.
What does a KTM 125 Duke cost to run?: Expect around 110 mpg, about £198 a year in fuel or energy, £180 for an annual service, £170 a pair for tyres every 7,000 miles, £180 for a chain and sprockets every 18,000 miles. Figures assume 3,000 miles a year, the UK average from DfT travel and traffic statistics, and current DESNZ pump prices. The cost-of-ownership table on the profile breaks this down per year and per mile.
Is the KTM 125 Duke likely to be stolen?: The KTM 125 Duke is a moderate theft target. Premium 125, popular with young riders — joyride target. KTM electronics make hot-wiring harder than older bikes; chain + disc lock essential. Theft is concentrated in E, N, SE, SW postcode areas. A Thatcham-approved chain and ground anchor, a disc lock and a tracker are what insurers look for, and secure overnight storage moves a premium more than almost anything else.

Answers are generated from this bike's Forecourt data — curated specifications, our valuation model and the week's DESNZ fuel and energy prices — and update with the weekly data refresh.