SANBEN SB 50 QT-16 TORNADO

50cc Petrol Class 1

59.7%

first-time pass rate

29.9%

failed outright

6,292

median miles at test

MOT tests, 2005–2025

What fails on a SB 50 QT-16 TORNADO

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	29	39.2
steering and suspension	23	31.1
brakes	12	16.2
tyres and wheels	5	6.8
body and structure	4	5.4
fuel and exhaust	1	1.4

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the SB 50 QT-16 TORNADO beats 0 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 SB 50 QT-16 TORNADO.

Pass rate by registration year

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

Best year to buy used: 2010 (59.3% pass). Weakest: 2010 (59.3%).

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.