27/05/2021
The London black cab is more than just a vehicle; it's an enduring symbol of British heritage, instantly recognisable worldwide. Among its most iconic iterations is the London Taxis International (LTI) TX4, a model that served as the backbone of the capital's taxi fleet for many years. But what exactly powers these distinctive machines, and for those looking to own a piece of this motoring legacy, where can they be found?
The Power Behind the Cab: LTI TX4's Fuel System
When discussing the LTI TX4, its fuel system is a point of particular interest, especially given the evolving landscape of vehicle emissions and urban air quality. The specific model you're referring to, the London Taxis International 2.5 LTI VRS TX4, is notable for its innovative Dual Fuel configuration. This means the vehicle is designed to run on two different types of fuel: traditional petrol and Liquefied Petroleum Gas (LPG).
Understanding Dual Fuel (Petrol/LPG)
A dual-fuel system offers significant advantages, particularly for high-mileage vehicles like taxis. Here’s a breakdown:
- Petrol (Gasoline): This is the primary or fallback fuel. The engine can start on petrol and switch to LPG once optimal operating temperature is reached. It provides a reliable alternative if LPG is unavailable or if there's an issue with the LPG system.
- LPG (Liquefied Petroleum Gas): LPG is a cleaner-burning and often cheaper alternative to petrol. It’s stored under pressure in a separate tank, typically located in the boot or underneath the vehicle, designed not to significantly impede passenger or luggage space in a taxi. When running on LPG, the engine benefits from lower emissions and reduced running costs per mile.
Euro 6 Compliance: A Step Towards Cleaner Air
The fact that this TX4 variant is Euro 6 compliant is crucial. Euro 6 is a set of European Union emission standards designed to reduce harmful pollutants from vehicle exhausts. For taxis operating in densely populated areas like London, meeting these standards is paramount for urban air quality. Euro 6 vehicles produce significantly lower levels of nitrogen oxides (NOx) and particulate matter compared to older standards. For a TX4, achieving Euro 6 compliance with a dual-fuel system demonstrated a commitment to environmental responsibility before the widespread adoption of electric taxis.
The benefits of the Dual Fuel Euro 6 TX4 for cab drivers were tangible:
- Reduced Running Costs: LPG is historically cheaper than petrol, leading to significant savings over the lifetime of a high-mileage taxi.
- Lower Emissions: LPG combustion produces fewer greenhouse gases and air pollutants, contributing to cleaner urban environments.
- Extended Range: With two fuel tanks, drivers had the flexibility to cover longer distances without frequent stops, or to choose the most cost-effective fuel source based on availability and price.
- Compliance: Meeting stringent Euro 6 standards allowed these vehicles to operate in low emission zones without penalty, a vital consideration for London taxi drivers.
The Evolution of Taxi Fuel in London
The TX4's dual-fuel setup represented an important transitional phase in London's taxi history. For decades, diesel engines dominated the black cab fleet due to their perceived robustness and fuel efficiency. However, as concerns about air pollution mounted, particularly diesel particulates and NOx, the industry began to explore alternatives. The TX4's petrol/LPG option offered a cleaner interim solution before the advent of the purpose-built electric taxi, such as the LEVC TX (formerly the TX5), which now forms the majority of new taxi registrations in London.
Acquiring Your Own LTI TX4: Where to Look
For enthusiasts, collectors, or even those considering a robust and distinctive vehicle for private use, the LTI TX4 remains a fascinating prospect. While new TX4s are no longer in production, the second-hand market offers ample opportunities to find these iconic machines.
Online Marketplaces: Auto Trader and Beyond
As you've noted, platforms like Auto Trader are prime locations for finding used LTI TX4s for sale across the UK. Auto Trader is renowned for having the largest range of second-hand cars, and this extends to niche vehicles like the TX4. When browsing, you'll find a variety of listings from both private sellers and dealerships.
Beyond Auto Trader, consider these avenues:
- Specialist Taxi Dealerships: Many dealerships specialise exclusively in the sale and maintenance of taxis. These businesses often have a deep understanding of the vehicles, their history, and the specific requirements for taxi operation (e.g., PCO licensing). They might also offer warranties or post-sale support.
- Auction Houses: Commercial vehicle auctions, especially those handling fleet disposals, can be a source of TX4s. These often come directly from taxi companies or local authorities.
- Online Classifieds: Websites like eBay Motors, Gumtree, and other local classifieds can sometimes feature private sales. While potentially offering lower prices, these typically come with less buyer protection than a reputable dealer.
- Taxi Driver Forums/Groups: Online communities for taxi drivers can be excellent resources. Members often advertise vehicles for sale directly, and you can gain valuable insights and advice from experienced owners.
What to Look For When Buying a Used TX4
Purchasing a used taxi requires a discerning eye, given the intense operational demands these vehicles typically endure. Here’s a checklist of crucial considerations:
| Aspect | Details to Check |
|---|---|
| Mileage & Service History | Taxis accumulate high mileage. A full, verifiable service history is paramount. Look for evidence of regular maintenance, especially for the dual-fuel system. |
| Bodywork & Chassis | Check for rust, dents, and signs of accident damage. Pay close attention to the chassis, as London roads can be harsh. Ensure the famous turning circle is still smooth and free of unusual noises. |
| Interior Condition | The interior, especially the passenger compartment, will show wear. Look for damaged seats, carpets, and working intercoms/displays. |
| Engine & Transmission | Listen for unusual noises. Check for smooth gear changes (if automatic) and proper operation of both petrol and LPG modes. A pre-purchase inspection by a specialist is highly recommended. |
| Dual Fuel System | Verify the LPG tank's certification and the overall condition of the LPG components. Ensure the switch between fuels is seamless. |
| PCO Compliance (if applicable) | If you intend to use it as a licensed taxi in London, ensure it meets all current PCO (Public Carriage Office) standards, though many older TX4s are now being phased out for new licences. |
| Tyres & Brakes | Inspect tyre wear and brake pad/disc condition. These are critical for safety, especially on a heavy vehicle. |
It's worth noting that while you mentioned a Mercedes Vito 113 CDI as a new listing, it's important to differentiate. While the Vito can be converted for taxi use, it is not an LTI TX4. The LTI TX4 is a purpose-built taxi, distinct from converted commercial vans. When specifically searching for a TX4, ensure the listing clearly identifies it as such.
The TX4's Legacy and Future
The LTI TX4 holds a significant place in the narrative of London's black cabs. It was the last iteration of the iconic FX4 'Fairway' lineage, evolving to meet modern demands while retaining its classic silhouette and legendary manoeuvrability, thanks to its incredibly tight turning circle.
While newer, electric models like the LEVC TX are now dominating the London streets, the TX4 continues to serve in various capacities. Many are still operating as licensed taxis outside of central London's stricter emission zones, while others have been repurposed for private hire, used as promotional vehicles, or even cherished by collectors. Its robustness and distinctive design ensure its enduring appeal.
Frequently Asked Questions About the LTI TX4
Is the LTI TX4 still being manufactured?
No, the LTI TX4 ceased production in 2017. It was succeeded by the LEVC TX, an entirely new electric range-extended taxi model.
Can I still get parts for a TX4?
Yes, parts for the TX4 are generally still available. LEVC (London Electric Vehicle Company), the successor to LTI, provides parts and support for its legacy vehicles. Independent specialists and aftermarket suppliers also stock a wide range of components.
What is the typical lifespan of a TX4?
With proper maintenance, a TX4 can have an incredibly long service life. Many have accumulated hundreds of thousands of miles during their time as taxis. Their robust construction was designed for continuous, heavy-duty use.
Are TX4s expensive to run?
Running costs can vary. While LPG offers cheaper fuel, the TX4 is a heavy vehicle, and maintenance costs can add up, especially for an older, high-mileage example. Insurance and licensing (if used commercially) are also significant factors.
Can a TX4 be converted to run on electricity?
While theoretically possible for any vehicle to be converted, practical and cost-effective electric conversions for the TX4 are not widely available or common. The LEVC TX was developed as a purpose-built electric successor.
What are the main differences between the TX4 and the newer LEVC TX?
The LEVC TX is a completely new design, featuring an electric powertrain with a petrol range-extender. It has a modern interior, enhanced accessibility features, and is significantly more fuel-efficient and environmentally friendly than the TX4. The TX4, in contrast, is a traditional diesel or dual-fuel internal combustion engine vehicle with a classic design.
Conclusion
The LTI TX4, particularly the 2.5 LTI VRS TX4 with its Dual Fuel (Petrol/LPG) Euro 6 engine, stands as a testament to London's commitment to evolving its iconic taxi fleet. It bridged the gap between traditional diesel cabs and the cleaner, more sustainable electric vehicles of today. For those interested in its mechanics, its dual-fuel system offers a fascinating insight into automotive innovation aimed at balancing performance, economy, and environmental responsibility.
If you're considering acquiring one, the second-hand market, especially platforms like Auto Trader and specialist taxi dealerships, provides numerous opportunities. However, a thorough inspection and understanding of its unique characteristics are essential. Owning a TX4 is more than just owning a car; it's owning a piece of London's vibrant history, a vehicle engineered for the demanding streets of one of the world's greatest cities, still offering a distinctive and robust driving experience.
If you want to read more articles similar to Fueling London's Icon: The TX4 Taxi Demystified, you can visit the Taxis category.