BMW M140i Buyers Guide & 3 Year Ownership Review

Summary

This video offers an in-depth review of the BMW M140i, highlighting its position in the BMW lineup and the features of its rear-wheel drive and straight-six engine. The host addresses common issues such as oil filter fitment, coolant leaks, and PCV membrane problems. They also discuss engine oil leaks, injector failures in 2016-2017 models, and updates throughout the car's production. The video includes a dynamic road test, comparing the M140i's driving experience to modern standards, and provides tips for potential buyers, concluding with a reliability score of 8.5 out of 10.

Takeaways

• 🚗 The BMW M140i is praised for its rear-wheel drive and straight-six engine, offering an old-school BMW driving experience.
• 🔧 Common problems include oil filter fitment issues, coolant leaks from the coolant bottle lid, and PCV membrane failures.
• 💧 It's normal for this model to lose a small amount of coolant, which is usually not a cause for concern.
• 🔥 The PCV membrane can cause the car to smoke excessively if it fails or is damaged.
• 🛠️ Oil leaks are somewhat expected with BMWs, so vigilance during test drives and post-purchase checks is advised.
• 🚨 For 2016 and 2017 models, injector failures can be dramatic, potentially leading to engine replacement.
• 🌟 Post-2018 models have improved injectors, and these can be retro-fitted for earlier models to enhance reliability.
• 🔧 Mid-production updates included changes to the exhaust system with the addition of an OPF filter from June 2018 onwards.
• 💨 Exhaust valves and standard back boxes are prone to rattling or failure, leading to many owners upgrading to M performance back boxes.
• ❄️ Models with frameless windows may experience freezing issues in winter, but a specific product can prevent this.
• 🏎️ The M140i offers a sporty drive and is more connected to the road compared to some of its contemporaries like the RS3.

Q & A

What is the BMW m140i known for?

The BMW m140i is known for being the epitome of old-school BMW characteristics, featuring rear-wheel drive, a straight-six engine, and being available as a manual transmission.

What is a common misconception about the oil filter in the BMW m140i?

A common misconception is that the oil filters disintegrate, but it's often due to bad fitment rather than a quality issue with the oil filters themselves.

What is a common issue with the coolant system in the BMW m140i?

A common issue is the loss of a small amount of coolant, which is usually due to the lid on the coolant bottle and not a significant concern.

What is the main symptom of a failing PCV membrane in the BMW m140i?

The main symptom of a failing PCV membrane is the car blowing a lot of smoke.

What is a common engine problem in the BMW m140i from 2016 and 2017 models?

A common engine problem in the 2016 and 2017 models is the failure of the injectors, which can wear the engine out if they fail in a spectacular fashion.

What updates did BMW make to the m140i during its production run?

BMW made updates to the m140i platform, including changes to the exhaust system with the addition of an OPF filter from June 2018 onwards.

Why are BMW m140i models without fog lights?

BMW m140i models do not have fog lights due to the need for a charge cooler in the space where the fog light would be located.

What is a common issue with the rear lights of the BMW m140i?

Water ingress can be an issue with the rear lights, causing them to flicker and potentially affecting the light unit.

What is the difference between the 8-speed ZF gearbox and the 6-speed manual gearbox in the BMW m140i?

The 8-speed ZF gearbox is an automatic, while the 6-speed manual gearbox offers a more traditional and engaging driving experience. Both are reliable, but the manual gearbox is rarer and offers a more direct connection to the car.

How does the BMW m140i perform on the road by today's standards?

The BMW m140i still performs well on the road, offering a linear power delivery and a sporty driving experience. It feels lively and connected, though it's more of a sports car than a family car.

What is the reliability rating of the BMW m140i?

The BMW m140i has a reliability rating of 8.5 out of 10, reflecting its relatively new platform and the use of a well-known reliable engine.