Moto Guzzi 850 T4
Real ownership data from 80 UK 850 T4 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common 850 T4 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 15.2% |
| Brakes | dangerous | 9.7% |
| Tyres | fail | 6.4% |
| Other | fail | 3.4% |
| Steering and head bearings | fail | 2.4% |
| Electrical | fail | 2.1% |
| Brake discs and pads | fail | 1.2% |
| Corrosion | user entered | 0.9% |
Advisories (wear noted but not failed) are excluded above; the most common is brake discs and pads.
850 T4 mileage and reliability by year
Use this to judge whether a specific bike is high or low mileage for its age.
| Year | Examples | Median mileage | Miles/year | First-time pass |
|---|---|---|---|---|
| 1981 | 28 | 43,264 mi | 398 | 86.7% |
| 1980 | 7 | 22,011 mi | 322 | 91.67% |
| 1978 | 8 | 73,688 mi | 562 | 83.64% |
850 T4 questions, answered with data
What are the most common problems with the Moto Guzzi 850 T4?
Across 80 UK examples, the most frequently recorded MOT faults are lights and indicators (15.2% of all recorded faults), brakes (9.7% of all recorded faults), tyres (6.4% of all recorded faults).
What is average mileage for a Moto Guzzi 850 T4?
The median Moto Guzzi 850 T4 in the UK has covered 42,130 miles, and typically rides about 458 miles a year. Half of all examples fall between 26,001 and 59,390 miles.
Is the Moto Guzzi 850 T4 reliable?
86.21% of Moto Guzzi 850 T4 MOT tests are passed first time, with an average of 0.61 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 80 Moto Guzzi 850 T4 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.