Sachs Madass vs Piaggio NRG

The Sachs Madass passes its MOT first time more often than the Piaggio NRG: 74.4% vs 65.5%, a 8.9-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Sachs Madass	Piaggio NRG
First-time pass rate	74.4%	65.5%
Outright fail rate	15.9%	27.4%
Vs comparable bikes (age & mileage adjusted)	-2.4 pts	-6.0 pts
Engine size	49cc	49cc
Rank among all models	#4364 of 5428	#4992 of 5428
Median miles at test	1,625	9,874
MOT tests analysed	1,189	40,458
Most common failure	lighting and signalling	lighting and signalling

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Sachs Madass	Piaggio NRG
Lights & signalling	11.4%	15.0%
Steering & suspension	7.8%	15.5%
Brakes	4.0%	10.2%
Tyres & wheels	1.1%	4.7%
Fuel & exhaust	0.8%	3.8%
Structure & body	1.2%	2.5%
Drive system	1.6%	0.0%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Sachs Madass	Piaggio NRG
2018	74.5%	69.2%
2019	86.5%	68.0%
2020	86.4%	71.8%
2021	81.5%	72.9%
2022	62.2%	74.8%
2023	79.5%	77.5%
2024	94.4%	81.9%
2025	82.4%	77.1%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Sachs Madass vs Piaggio NRG FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Sachs Madass or the Piaggio NRG?

The Sachs Madass passes its MOT first time more often than the Piaggio NRG: 74.4% vs 65.5%, a 8.9-point lead. Adjusted for age, mileage and test class, the Sachs Madass still comes out ahead: -2.4 points vs comparable bikes for the Sachs Madass, -6.0 for the Piaggio NRG. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Sachs Madass fail its MOT on most?

Lights & signalling: 11.4% of Sachs Madass MOT tests failed on it, then steering & suspension (7.8%).

What does the Piaggio NRG fail its MOT on most?

Steering & suspension: 15.5% of Piaggio NRG MOT tests failed on it, then lights & signalling (15.0%).

SACHS MADASS 74.4% pass · 1,189 tests PIAGGIO NRG 65.5% pass · 40.5k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.