Mazda Mazda3 IV (BP) (2019 – 2025)

Reliability score : 8.8/10

The fourth-generation Mazda3 (internal code BP) marks a decisive turning point for the Hiroshima-based manufacturer, with a clearly assumed positioning towards the premium segment. Featuring the refined 'Kodo' design, it offers interior finish quality that rivals German benchmarks. Technically, it is based on the Skyactiv-Vehicle Architecture platform. Although global demand has massively shifted towards gasoline (with the innovative e-Skyactiv G and X engines), Mazda initially offered a 1.8 Skyactiv-D diesel engine. The latter had a very short career in Europe (withdrawn in late 2020/early 2021 depending on the country) due to taxation and the decline in popularity of diesel, but it remains relevant in the used car market for high-mileage drivers. Overall, the Mazda3 BP is an extremely re

⚠️ Weaknesses

🎯 Verdict

The Mazda3 (BP) is one of the most reliable compact cars on the market. If you are specifically targeting the 1.8 Skyactiv-D diesel engine, it is a wise choice only if you are a high-mileage driver. Its immense advantage lies in the absence of an AdBlue system, saving you from the ruinous failures that plague contemporary French or German diesels. However, it does not tolerate exclusive urban use (risk of clogging and oil dilution). If your annual mileage is less than 20,000 km, confidently opt for the gasoline engines (e-Skyactiv G or X), which are models of reliability and fuel efficiency.