BSA B31 Buying Guide & Reliability (1952-1957)

The BSA B31 is a classic motorcycle produced by BSA between 1952 and 1957. This model is notable for its robust design and reliable performance, making it a popular choice among enthusiasts of vintage motorcycles.

Last updated September 08, 2025 1998 words Based on real UK vehicle data

BSA B31 Overview

The BSA B31 is a classic motorcycle produced by BSA between 1952 and 1957. This model is notable for its robust design and reliable performance, making it a popular choice among enthusiasts of vintage motorcycles. With a total of five registration plates recorded, the B31 has maintained a presence in the classic bike community.

Throughout its production years, the BSA B31 was registered in various colours, with green and maroon being the most common, each accounting for two of the total registrations. A single example was registered in black. The distribution of models across the years shows a balanced representation, with two registrations in 1955, and one each in 1952, 1956, and 1957.

In terms of performance, the BSA B31 has an impressive MOT pass rate of 88.9%, indicating that the majority of these motorcycles remain roadworthy. Out of a total of 27 MOT tests conducted, only a few common failures have been reported, although specific details on these failures are not provided.

The fuel type distribution for the B31 is exclusively petrol, which aligns with the expectations for motorcycles of this era. Additionally, the tax status of the BSA B31 shows that three of the registered models are currently taxed, while two are declared SORN (Statutory Off Road Notification).

Geographically, all five registrations of the BSA B31 are located in Great Britain, highlighting its popularity in this region. As a classic motorcycle, the BSA B31 continues to attract interest from collectors and riders alike, reflecting its enduring legacy in the automotive world.

Disclaimer: The data presented here is based on available records and may not reflect the complete history of the BSA B31. For the most accurate and up-to-date information, further research may be necessary.

Reliability and MOT Performance

The BSA B31, produced between 1952 and 1957, has demonstrated a commendable reliability record, with an MOT pass rate of 88.9%. This statistic reflects the model's overall durability and the satisfaction of its owners regarding its performance on the road.

Over the course of its production, a total of 27 MOT tests have been conducted on the B31, highlighting its presence in the classic motorcycle community. The model has five registered plates, with the latest being 10027077, 7386202, 4908124, 4836713, and 3640962. This indicates a sustained interest in the B31, as evidenced by the number of vehicles still in circulation.

Common failures during MOT tests for the BSA B31 are not specified in the available data, but understanding typical issues can help prospective buyers make informed decisions. The vehicle's fuel type distribution shows that all five registered models run on petrol, which is standard for motorcycles of this era.

In terms of colour distribution, the B31 is available in green (2), maroon (2), and black (1), offering a modest variety for enthusiasts. The year distribution of registered models includes one from 1957, one from 1956, two from 1955, and one from 1952, indicating a balanced representation across its production years.

Regarding tax status, three of the B31 models are currently taxed, while two are declared SORN (Statutory Off Road Notification). This suggests that a significant number of these motorcycles are still actively used on the roads.

It is important to note that the data presented here is based on available records and may not reflect the complete picture of the BSA B31's reliability and MOT performance. Always consult with a professional for the most accurate and up-to-date information.

What to Check When Buying Used

When considering the purchase of a used BSA B31, there are several key factors to evaluate to ensure you make a sound investment. This classic motorcycle, produced between 1952 and 1957, has a total of five registration plates recorded, indicating a modest but varied history.

First, check the MOT pass rate, which stands at an impressive 88.9%. This statistic suggests that the B31 generally holds up well in terms of roadworthiness. However, it is essential to review the common failures noted in previous tests, as these can provide insight into potential issues that may arise.

Next, consider the vehicle's tax status. Out of the five recorded BSA B31s, three are currently taxed while two are declared SORN (Statutory Off Road Notification). This information can help you gauge the vehicle's usage and maintenance history.

Colour can also be a factor in your decision. The B31 is available in a few distinct colours, with green and maroon being the most common, each represented by two vehicles, while black is less common with only one recorded instance. The aesthetic appeal of the motorcycle may influence your choice.

Additionally, take note of the year distribution of the models available. The B31s from 1955 are the most prevalent, with two registrations, followed by one each from 1952, 1956, and 1957. This distribution may affect the availability of parts and the overall market value.

Finally, always verify the vehicle's history through its registration plates. The latest plates include 10027077, 7386202, 4908124, 4836713, and 3640962. Ensuring that the motorcycle has a clear history can prevent future complications.

Disclaimer: The data provided is based on available records and may not reflect the current status of individual vehicles. Always conduct thorough checks before purchasing.

Running Costs and Specifications

Running Costs and Specifications

The BSA B31, produced between 1952 and 1957, is a classic motorcycle that appeals to enthusiasts and collectors alike. With a total of five registration plates recorded, this model has a notable presence on the roads. The B31 has undergone 27 MOT tests, achieving an impressive pass rate of 88.9%. This statistic indicates that the majority of these motorcycles are well-maintained and roadworthy.

In terms of common failures, specific data is not provided, but the high MOT pass rate suggests that significant issues are relatively rare among well-cared-for models. The B31 runs on petrol, which is consistent with its design as a classic motorcycle.

When considering the running costs, potential owners should be aware of the tax status distribution. Out of the five registered B31s, three are currently taxed, while two are declared SORN (Statutory Off Road Notification). This information is crucial for prospective buyers, as it may affect the overall cost of ownership.

The colour distribution of the BSA B31 is quite varied, with two motorcycles in green, two in maroon, and one in black. This variety allows for personal preference when selecting a model. The year distribution shows that the most common years for the B31 are 1955, with two registrations, followed by 1952, 1956, and 1957, each with one registration.

In summary, the BSA B31 is a well-regarded classic motorcycle with a solid MOT pass rate and a diverse range of colours. As with any classic vehicle, potential buyers should conduct thorough research and consider the specific running costs associated with ownership. Please note that the data presented here is based on available records and may not reflect the most current information.

Alternative Models to Consider

If you're exploring options similar to the BSA B31, there are several alternative models worth considering. The BSA B31, produced between 1952 and 1957, has a solid reputation with an impressive MOT pass rate of 88.9%. This reliability makes it a strong contender in the classic motorcycle market.

When looking for alternatives, consider models from the same era that offer comparable performance and style. For instance, the BSA Gold Star, known for its racing pedigree, provides a sportier option with a similar aesthetic appeal. Another alternative is the AJS Model 20, which features a classic design and is well-regarded for its smooth ride.

In terms of availability, the BSA B31 has a total of five registration plates recorded, indicating a modest presence in the market. The colour distribution of the B31 includes green, maroon, and black, with green and maroon being the most common choices. This variety allows for personalisation based on your aesthetic preferences.

It's also worth noting that the B31 has a total of 27 MOT tests recorded, which reflects its ongoing use and maintenance within the classic motorcycle community. With three of the five registered models currently taxed, the B31 remains a viable option for enthusiasts looking to own a piece of motorcycle history.

For those considering a purchase, be aware that two of the models are currently SORN (Statutory Off Road Notification), which may affect their availability for immediate use. Always ensure to check the latest registration details and condition of any alternative models you consider.

As with any classic vehicle, data accuracy can vary, and it's advisable to conduct thorough research and inspections before making a purchase decision.

Frequently Asked Questions

Frequently Asked Questions

What years was the BSA B31 produced?
The BSA B31 was manufactured between 1952 and 1957. This model spans several years, with notable production in 1955, 1956, and 1957.

How many BSA B31 vehicles are currently registered?
There are a total of five registered BSA B31 vehicles, with the latest registration plates including 10027077, 7386202, 4908124, 4836713, and 3640962.

What is the MOT pass rate for the BSA B31?
The BSA B31 has an impressive MOT pass rate of 88.9%. This statistic reflects the reliability and condition of the model over the years.

What are the common reasons for MOT failures?
While specific common failures for the BSA B31 are not detailed, it is advisable for owners to ensure regular maintenance to avoid typical issues that can arise with vintage vehicles.

What fuel type does the BSA B31 use?
The BSA B31 operates on petrol, which is consistent with its design as a classic motorcycle.

What colours are available for the BSA B31?
The BSA B31 is available in several colours, with green and maroon being the most common, each represented by two vehicles, while black is less common with only one vehicle registered in that colour.

What is the tax status of the BSA B31?
Out of the five registered BSA B31 vehicles, three are currently taxed, while two are declared SORN (Statutory Off Road Notification).

Where are the BSA B31 vehicles primarily located?
All registered BSA B31 vehicles are located in Great Britain.

Note: The data provided is based on current registrations and may not reflect future changes. Always verify with official sources for the most accurate information.

Data Source: This guide is based on analysis of extensive UK vehicle database in our database, including MOT test results and DVLA records.

Disclaimer: This information is provided for guidance only and is based on historical data in our database. Always verify current vehicle details with official sources and get a professional inspection before purchase.

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