The Pros and Cons of Buying a Used Diesel Car

As the automotive landscape evolves, many UK drivers find themselves weighing the benefits and drawbacks of purchasing a used diesel car. At Avalon Motors in Glastonbury, we understand this decision can be complex. This article aims to provide a balanced overview of the advantages and disadvantages of opting for a pre-owned diesel vehicle in today's market.

Pros of Buying a Used Diesel Car

1. Fuel Efficiency

Diesel engines have long been praised for their superior fuel efficiency compared to petrol counterparts. This advantage becomes even more pronounced on long journeys, making diesel cars an attractive option for those who frequently travel long distances or commute on motorways. The improved fuel economy can lead to significant savings at the pump over time.

2. Lower Carbon Dioxide Emissions

Diesel engines typically produce less carbon dioxide (CO2) than petrol engines. For environmentally conscious drivers concerned about their carbon footprint, this can be a compelling reason to choose a diesel vehicle.

3. Longevity and Durability

Diesel engines are renowned for their robustness and longevity. With proper maintenance, many diesel cars can clock up impressive mileage, often surpassing 200,000 miles without major mechanical issues. This durability can translate to a longer lifespan for used diesel vehicles, potentially offering better value for money in the long run.

4. Higher Torque

Diesel engines generate more torque at lower revs compared to petrol engines. This characteristic results in stronger pulling power, making diesel cars particularly well-suited for towing caravans or trailers. It also contributes to a smoother driving experience, especially when accelerating from low speeds.

5. Slower Depreciation

Historically, diesel cars have tended to hold their value better than petrol vehicles. While this trend has shifted somewhat in recent years due to changing regulations and public perception, many used diesel cars still offer competitive resale values, particularly for larger vehicles and those with high-end specifications.

6. Potentially Lower Purchase Price

With the increasing focus on electric and hybrid vehicles, along with stricter emissions regulations, the demand for diesel cars has decreased in some segments of the market. This shift can result in more competitive pricing for used diesel vehicles, potentially allowing buyers to acquire a higher-spec car for their budget.

Cons of Buying a Used Diesel Car

1. Higher Maintenance Costs

Diesel engines are generally more complex than petrol engines and can be more expensive to maintain and repair. Components such as fuel injectors, turbochargers, and diesel particulate filters (DPFs) can be costly to replace if they fail. Regular servicing is crucial to keep a diesel car running efficiently, which can add to the overall ownership costs.

2. Emissions Concerns and Regulations

In recent years, there has been increased scrutiny on diesel emissions, particularly nitrogen oxides (NOx) and particulate matter. This has led to the introduction of stricter emissions standards and the implementation of low emission zones in many UK cities. Older diesel cars may not meet these standards, potentially limiting their access to certain urban areas or incurring additional charges.

3. Higher Road Tax for Some Models

Vehicle Excise Duty (road tax) rates for diesel cars registered after April 2017 are typically higher than for petrol cars with equivalent CO2 emissions. While this doesn't affect older used diesels directly, it's a factor to consider when evaluating the long-term costs of ownership.

4. Potential for Future Restrictions

With the UK government's plan to ban the sale of new petrol and diesel cars by 2030, there is uncertainty about potential future restrictions on diesel vehicles. While no immediate bans on existing diesel cars are planned, future policies could impact their usability or resale value.

5. Higher Fuel Costs

Although diesel engines are more fuel-efficient, the price of diesel fuel in the UK is often higher than petrol. This can offset some of the savings gained from better fuel economy, especially for drivers who don't cover high annual mileages.

6. Less Suitable for Short Journeys

Diesel engines perform best when they reach and maintain optimal operating temperature. Frequent short trips can prevent this, potentially leading to increased wear and tear, reduced efficiency, and issues with components like the DPF. For drivers who primarily make short urban journeys, a diesel car may not be the most suitable option.

7. Noise and Vibration

While modern diesel engines have improved significantly, they can still be noisier and produce more vibration than petrol engines, especially at idle and low speeds. This may be a consideration for drivers who prioritise a quiet and smooth driving experience.

Making an Informed Decision

When considering a used diesel car, it's essential to evaluate your specific needs and circumstances:

• Mileage: If you drive more than 12,000 miles per year, particularly on longer journeys, a diesel car could still offer significant benefits.
• Location: Consider whether you frequently drive in areas with low emission zones or may be affected by potential future restrictions.
• Vehicle Age and Emissions Standard: Newer diesel cars meeting Euro 6 standards are less likely to be impacted by current and near-future emissions regulations.
• Maintenance History: When buying used, a comprehensive service history is crucial to ensure the car has been well-maintained and is less likely to encounter costly issues.

At Avalon Motors, we believe in helping our customers make informed decisions. While diesel cars continue to offer advantages for certain drivers, it's important to weigh these against the potential drawbacks and your personal circumstances. We encourage you to discuss your specific requirements with our knowledgeable team, who can provide tailored advice and help you explore our range of quality used vehicles, including both diesel and alternative fuel options.

Ultimately, the decision to buy a used diesel car in the UK depends on a careful assessment of your driving habits, financial considerations, and environmental concerns. By understanding both the advantages and challenges associated with diesel vehicles, you can make a choice that best suits your needs and provides the best value for your investment.