DERBI PREDATOR

49cc Petrol Class 1

#4952 of 5426 overall #6 of 19 DERBIs #300 of 455 moped bikes

66.3%

first-time pass rate

25.3%

failed outright

8,024

median miles at test

1,298

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2014

The PREDATOR's first-time pass rate has risen 3.5 points since 2005, 69.7% to 73.2%.

Pass rate by mileage

how the PREDATOR's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage PREDATOR passes first time 68.3% of the time; by 20k that's 51.2%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a PREDATOR

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	302	32.1	3.2×
brakes	263	27.9	2.8×
steering and suspension	216	22.9	3.9×
fuel and exhaust	56	5.9	5.3×
tyres and wheels	37	3.9	1.4×
driving controls	23	2.4	7.5×
body and structure	18	1.9	2.4×
reg plates and vin	15	1.6	1.6×
Items Not Tested	11	1.2	5.0×
drive system	1	0.1	0.1×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the PREDATOR beats 2 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the PREDATOR.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2000 (71.1% pass). Weakest: 2003 (59.8%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

DERBI PREDATOR FAQ

answers computed from the data above · terms in the glossary

Is the DERBI PREDATOR reliable?

The DERBI PREDATOR is less reliable than average for its class: 66.3% of its 1,298 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4952 of 5426 models.

What does a PREDATOR fail its MOT on most?

lighting and signalling — 32% of all defects recorded against failed PREDATOR tests.

What is the best year of PREDATOR to buy used?

By first-time pass rate, 2000-registered examples do best (71.1%) and 2003 worst (59.8%). Condition and history still trump the year.

How many miles will a PREDATOR last?

The median PREDATOR shows 8,024 miles at test, and examples around 20k miles still pass 51.2% of the time — mileage alone rarely kills one.