New BMW 3 Series to Get Four and Six-Cylinder Petrol Engines

September 14, 2026 Avinash

BMW is preparing the next-generation BMW 3 Series with a continued focus on petrol power. The upcoming sedan will reportedly get four-cylinder and six-cylinder petrol engines. BMW also plans to pair these engines with 48V mild-hybrid technology.

This move will allow the company to keep offering petrol-powered cars while it expands its electric vehicle range. The new 3 Series will sit alongside the upcoming electric BMW i3, giving buyers more powertrain choices.

The new-generation sedan could also bring design, technology and cabin updates as BMW prepares it for the next stage of its life cycle.

BMW is preparing the next-generation BMW 3 Series with a continued focus on petrol power.

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New BMW 3 Series Petrol Engines

The next BMW 3 Series will continue with internal combustion engines. BMW plans to offer both four-cylinder and six-cylinder petrol units. The company will add 48V mild-hybrid technology to improve efficiency and support smoother performance.

The four-cylinder engine could power the more affordable variants, while the six-cylinder unit could remain available in higher-performance versions. BMW has not revealed complete engine specifications yet.

Mild-Hybrid Technology

The new 3 Series will use 48V mild-hybrid technology with its petrol engines. This system can support the engine during acceleration and help reduce fuel consumption.

The technology can also improve the smoothness of the start-stop system. BMW could use this setup across several variants of the upcoming sedan.

BMW 3 Series and Electric i3

BMW will offer the new petrol-powered 3 Series alongside the electric BMW i3. This strategy will give customers a choice between traditional petrol power and an electric powertrain.

The company continues to expand its EV lineup, but the new 3 Series shows that BMW still sees demand for petrol-powered luxury cars.

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What to Expect?

The new BMW 3 Series could also receive updates to its exterior design, interior and technology. BMW may introduce a more modern cabin with upgraded screens and connected features.

The company has not revealed the complete specifications or launch timeline yet. More details should emerge as BMW moves closer to the official debut of the new-generation 3 Series.

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