Used BMW i3: Running Costs Vs Petrol

The BMW i3 stands out as a compelling option for those considering an electric vehicle (EV). With a MOT pass rate of 89.1% based on 2,536 DVSA MOT tests, it shows a solid reliability record compared to the national average of 79.1%. This guide will delve into the running costs of the used BMW i3, comparing them with traditional petrol vehicles, and provide you with the insights needed to make an informed decision.

Key facts

• The BMW i3 has an MOT pass rate of 89.1%, based on 2,536 tests.
• The national average pass rate for all models is 79.1%.
• The most common MOT failure areas for the i3 are tyres (55.3%), brakes (18%), and lights (9.1%).
• The i3's fail rate is 10.9%, with 9% for cars under 40,000 miles.
• The i3 is ranked 20 out of 386 cars by MOT pass rate.

Understanding the BMW i3

The BMW i3 is a compact electric vehicle that has been in production since 2013. It was designed with sustainability in mind, featuring a lightweight carbon-fibre reinforced plastic body and an efficient electric drivetrain. The i3 comes in two variants: the pure electric version and the range extender model, which includes a small petrol engine to charge the battery when it runs low. This flexibility makes it an attractive option for those who may be hesitant about fully committing to an electric vehicle.

Running Costs of the BMW i3

When considering the running costs of the BMW i3, several factors come into play, including charging costs, maintenance, insurance, and depreciation. Let's break these down.

Charging Costs

Charging the BMW i3 is typically much cheaper than filling up a petrol car. The i3 has a battery capacity of around 42 kWh, which provides a real-world range of approximately 150 to 180 miles, depending on driving conditions and style. Charging costs can vary based on your energy provider and whether you charge at home or use public charging stations.

• Home Charging: If you charge at home, the average cost of electricity in the UK is around 34p per kWh. Therefore, a full charge would cost approximately £14.28 (42 kWh x £0.34). This means you could achieve a cost per mile of around 9.5p, which is significantly lower than the cost per mile of petrol.
• Public Charging: Public charging stations can be more expensive, with costs ranging from 20p to 60p per kWh. Fast chargers tend to be on the higher end of this spectrum. However, many public charging stations offer free charging, especially in shopping centres or during promotional events.

In comparison, petrol prices fluctuate but typically average around £1.50 per litre. A petrol car that achieves 40 miles per gallon would cost approximately 12.5p per mile. Thus, the i3 can save you a few pence per mile compared to petrol vehicles, especially when charging at home.

Maintenance Costs

Maintenance costs for the BMW i3 are generally lower than those for petrol cars. Electric vehicles have fewer moving parts, which means less wear and tear. Here are some key points to consider:

• Servicing: The i3 requires servicing every 18,000 miles or two years, whichever comes first. Typical service costs can range from £150 to £300, depending on the service required. This is often less than the costs associated with servicing a petrol vehicle, which may require more frequent oil changes and other maintenance.
• Tyres and Brakes: As noted, tyres are the most common area for defects in the i3, accounting for 55.3% of issues recorded during MOT tests. Regular checks and replacements are essential, but electric vehicles tend to have less brake wear due to regenerative braking systems, which can save you money in the long run.
• Battery Health: Battery maintenance is crucial for electric vehicles. The i3's battery is designed to last for many years, but it’s wise to check battery health before purchasing a used model. You can find more about what to expect regarding battery degradation in our guide on battery degradation.

Insurance Costs

Insurance for the BMW i3 can vary based on factors such as your driving history, location, and the specific model you choose. Generally, the i3 falls into a lower insurance group compared to many petrol vehicles, which can lead to savings on premiums. For example, the i3 is often rated between groups 20 and 24, while many petrol cars can be found in higher groups. You can check specific insurance groups using resources like Thatcham insurance groups.

Comparing with Petrol Vehicles

When comparing the running costs of the BMW i3 with petrol vehicles, it’s essential to consider not just the immediate costs but also the long-term savings and environmental impact.

Fuel Costs

As mentioned earlier, the cost per mile for the i3 is generally lower than that of petrol cars. Over a year, if you drive around 10,000 miles, you could save hundreds of pounds on fuel alone. For instance, if you were to spend 12.5p per mile on petrol, that would amount to £1,250 annually. In contrast, if you spend around 9.5p per mile on electricity, that would total approximately £950. This results in a potential saving of £300 per year.

Environmental Impact

Driving an electric vehicle like the BMW i3 contributes to lower carbon emissions compared to petrol vehicles. While the production of electric vehicles does have an environmental impact, the overall lifecycle emissions are generally lower, especially if you charge using renewable energy sources. This is an important consideration for many buyers today who are looking to reduce their carbon footprint.

Common Problems Specific to the BMW i3

While the BMW i3 is a reliable vehicle, it is not without its issues. Understanding these common problems can help you make a more informed purchase decision. Some of the most frequently reported issues include:

• Battery Range: As the battery ages, its capacity may diminish, leading to reduced range. It’s crucial to check the battery health before purchasing a used i3. Our guide on common problems before buying provides further insights.
• Tyre Wear: With 55.3% of defects related to tyres, it’s essential to inspect the tyre condition and tread depth during your pre-purchase check. Regular rotation and alignment can help extend tyre life.
• Braking System: While regenerative braking helps save energy, it can lead to issues if not maintained properly. Ensure that the brakes are in good condition and check for any warning lights on the dashboard.

Conclusion: Is the BMW i3 Worth It?

The BMW i3 presents a compelling case for those considering an electric vehicle. With lower running costs, reduced maintenance expenses, and a smaller environmental footprint, it stands out against petrol vehicles. The potential savings on fuel and maintenance can be significant, especially if you drive frequently.

However, it’s essential to do your homework. Check the specific vehicle's history using the CarBuyerIQ Vehicle Check to ensure you’re making a sound investment. You can start with a free check by entering the car's registration. This will provide you with valuable insights into the vehicle's history, including any outstanding finance, insurance write-off markers, and more.

In summary, if you're looking for a reliable, cost-effective, and environmentally friendly vehicle, the BMW i3 is certainly worth considering. With its solid MOT pass rate and lower running costs, it could be the perfect fit for your lifestyle. Don't forget to explore our other guides, such as is it worth buying used and charging costs, to further inform your decision.