ALEXANDER/DENNIS ENVIRO 400 Buying Guide & Reliability (2006-2015)

The Alexander/Dennis Enviro 400 is a prominent model in the UK bus market, produced between 2006 and 2015. With a total of 38 registration plates recorded, this model has established itself as a reliable choice for public transport operators.

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

ALEXANDER/DENNIS ENVIRO 400 Overview

The Alexander/Dennis Enviro 400 is a prominent model in the UK bus market, produced between 2006 and 2015. With a total of 38 registration plates recorded, this model has established itself as a reliable choice for public transport operators.

In terms of performance, the Enviro 400 boasts an impressive MOT pass rate of 96.5%. This statistic highlights the vehicle's reliability and adherence to safety standards. However, common failures have been noted, including issues related to lighting, brakes, and other categories, with a total of four reported failures across these areas.

All registered Enviro 400 vehicles are powered by diesel engines, reflecting the model's commitment to traditional fuel types during its production years. The colour distribution of these buses is diverse, with 17 multi-coloured vehicles, 16 red, 3 blue, and a few in grey and maroon.

The year distribution of the Enviro 400 shows a significant presence in 2008, with 11 vehicles registered, followed by 10 in 2010 and 6 in 2009. The model saw fewer registrations in its earlier years, with only 2 in 2006 and 3 in 2007. The latest registration plates include notable entries such as 12743025 and 12552968.

Regarding tax status, 32 of the Enviro 400 buses are currently taxed, while 4 are untaxed and 2 are declared SORN (Statutory Off Road Notification). The average annual mileage for these vehicles stands at 38,886 miles, indicating their active use in public transport.

Data accuracy is subject to change, and while every effort has been made to ensure the information is up-to-date, discrepancies may occur. This overview serves as a general guide to the Alexander/Dennis Enviro 400 model.

Reliability and MOT Performance

The Alexander/Dennis Enviro 400 has demonstrated a commendable reliability record, particularly evident in its MOT performance. With a pass rate of 96.5%, this model showcases its ability to meet the stringent safety and environmental standards set by the UK government.

Over a total of 288 MOT tests conducted on this model, the most common reasons for failure were categorised as 'Other' (2 instances), followed by 'Lighting' (1 instance) and 'Brakes' (1 instance). These figures suggest that while the Enviro 400 generally performs well, attention to lighting and braking systems may be beneficial for maintaining optimal performance.

In terms of age distribution, the Enviro 400 spans model years from 2006 to 2015, with the highest concentration of vehicles registered in 2010 (10 vehicles) and 2008 (11 vehicles). This range indicates a robust presence in the market, with 38 registration plates recorded across various years.

Fuel type distribution shows that all 38 vehicles are diesel, which is consistent with the model's design for urban transport efficiency. The colour distribution is diverse, with 17 multi-colour vehicles, 16 red, 3 blue, and a few in grey and maroon, reflecting the model's appeal to a wide range of operators.

Regarding tax status, 32 of the vehicles are currently taxed, while 4 are untaxed and 2 are declared SORN (Statutory Off Road Notification). This data highlights the active use of the Enviro 400 in public transport, particularly in Great Britain, where all registered vehicles are located.

While this information is based on available data, it is important to note that individual vehicle performance may vary. Always consult relevant sources for the most accurate and up-to-date information.

What to Check When Buying Used

When considering the purchase of a used Alexander/Dennis Enviro 400, there are several key factors to evaluate to ensure a sound investment. With a total of 38 registration plates recorded, this model has been a popular choice in the UK, particularly between the years 2006 and 2015.

First, review the vehicle's MOT history. The Enviro 400 boasts an impressive MOT pass rate of 96.5%, indicating that most vehicles in this range have been well-maintained. However, it is essential to check for any common failures noted in previous tests. For this model, common issues include lighting (1 failure), brakes (1 failure), and other categories (2 failures). Understanding these can help you anticipate potential repairs.

Next, consider the vehicle's mileage. The average annual mileage for the Enviro 400 is approximately 38,886 miles. A higher mileage may indicate more wear and tear, so it’s advisable to assess the overall condition of the vehicle in relation to its mileage.

Tax status is another important aspect to check. Out of the 38 vehicles, 32 are currently taxed, while 4 are untaxed and 2 are declared SORN (Statutory Off Road Notification). Ensure that the vehicle you are considering is either taxed or has a valid reason for being untaxed.

Additionally, take note of the colour distribution among the Enviro 400s. The most common colours are multi-colour (17), red (16), blue (3), grey (1), and maroon (1). This may influence your choice based on personal preference.

Finally, always verify the vehicle's history and documentation. This includes service records and previous ownership details. While the data provided is accurate as of October 2023, it is advisable to conduct your own checks to ensure the information remains current.

Running Costs and Specifications

Running Costs and Specifications

The Alexander/Dennis Enviro 400, produced between 2006 and 2015, is a popular choice among operators, with a total of 38 registration plates recorded. This model has demonstrated a commendable MOT pass rate of 96.5%, indicating its reliability and adherence to safety standards.

In terms of common failures, the Enviro 400 has reported a few issues during MOT tests. The most frequent failures include two instances classified under 'Other', one related to 'Lighting', and another concerning 'Brakes'. These statistics suggest that while the vehicle is generally dependable, operators should remain vigilant regarding these specific areas.

All 38 units of the Enviro 400 are powered by diesel engines, reflecting a consistent fuel type distribution. The colour distribution of these vehicles shows a diverse palette, with 17 in multi-colour, 16 in red, 3 in blue, and a few in grey and maroon.

Yearly distribution indicates that the majority of these vehicles were registered in 2010 (10 units) and 2008 (11 units), with fewer units from earlier years. The latest registration plates include numbers such as 12743025 and 12552968, showcasing the model's ongoing presence in the market.

Regarding tax status, 32 of the Enviro 400 units are currently taxed, while 4 are untaxed and 2 are declared SORN (Statutory Off Road Notification). This information is crucial for potential buyers and operators to consider when evaluating running costs.

With an average annual mileage of 38,886 miles, the Enviro 400 is designed for substantial use, making it a robust option for public transport operators. Please note that all data provided is based on available records and may be subject to change.

Alternative Models to Consider

If you're exploring options similar to the Alexander/Dennis Enviro 400, there are several alternative models worth considering. The Enviro 400, produced between 2006 and 2015, has a strong presence in the market, with 38 registered vehicles. Its impressive MOT pass rate of 96.5% indicates a reliable choice for buyers.

When looking for alternatives, consider models that also boast high reliability and a solid track record. The Enviro 400's common failures are minimal, with only a few issues reported in categories such as lighting and brakes. This suggests that other models with similar reliability metrics may also be suitable.

In terms of fuel type, the Enviro 400 is exclusively diesel, which is a common choice for many buses. If you are open to exploring other fuel types, you might want to look at hybrid or electric models that are becoming increasingly popular in urban areas.

Colour options for the Enviro 400 are diverse, with a distribution of multi-colour (17), red (16), blue (3), grey (1), and maroon (1). This variety may appeal to buyers looking for specific aesthetics. When considering alternatives, check for similar colour distributions to find a model that suits your preferences.

Additionally, the average annual mileage for the Enviro 400 stands at 38,886 miles, which can help you gauge the usage of similar models. Look for alternatives that have comparable mileage to ensure you are making a well-informed decision.

In summary, while the Alexander/Dennis Enviro 400 is a commendable choice, exploring other models with similar reliability, fuel types, and aesthetic options can provide you with a broader perspective. Always ensure to verify the latest data and specifications when considering your options.

Disclaimer: The data presented is based on available statistics and may not reflect the most current market conditions. Always conduct thorough research before making a purchase.

Frequently Asked Questions

Frequently Asked Questions

What is the registration plate count for the Alexander/Dennis Enviro 400?

The Alexander/Dennis Enviro 400 has a total of 38 registration plates recorded, indicating a significant presence in the UK market.

What years were the Enviro 400 models produced?

This model was produced between 2006 and 2015, with notable quantities in the years 2008 (11 units), 2010 (10 units), and 2011 (5 units).

What is the MOT pass rate for the Enviro 400?

The Enviro 400 boasts an impressive MOT pass rate of 96.5%, reflecting its reliability and adherence to safety standards.

What are the common failures reported for this model?

Common failures during MOT tests include issues categorised as 'Other' (2 instances), 'Lighting' (1 instance), and 'Brakes' (1 instance). These statistics highlight areas where owners may need to pay attention.

What fuel type does the Enviro 400 use?

All recorded Enviro 400 models utilise diesel fuel, which is consistent with the vehicle's design for public transport efficiency.

What colours are available for the Enviro 400?

The colour distribution for the Enviro 400 includes 17 multi-colour vehicles, 16 red, 3 blue, and a few in grey and maroon, offering a variety of aesthetic options.

What is the average annual mileage for the Enviro 400?

The average annual mileage for the Enviro 400 is approximately 38,886 miles, indicating its frequent use in public transport services.

What is the tax status of the Enviro 400?

Out of the 38 registered vehicles, 32 are taxed, 4 are untaxed, and 2 are declared SORN (Statutory Off Road Notification).

Disclaimer: The data presented is based on available records and may not reflect the most current information. Always verify details with official sources.

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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