The 9 Most Efficient Engines On Earth — 6 Are Chinese And Toyota, Honda And Nissan Aren't Even Close

The 9 Most Efficient Engines On Earth — 6 Are Chinese And Toyota, Honda And Nissan Aren't Even Close

China now holds the six most thermally efficient engines in the world. Toyota, Honda and Nissan — the three companies that invented and dominated the hybrid era — finish at the bottom of this list.

In this video I count down the nine most thermally efficient production engines on the planet, from the lowest to the highest. The winner holds a Guinness World Record verified by an independent inspector, returns 2.22 litres per 100 km, and sits less than two percentage points behind a Formula One power unit.

We cover the technology behind each one: 500 bar direct injection, ceramic thermal coatings, compression ratios above 15.5:1, and AI-based energy management trained on over a thousand driving scenarios.

⏱ CHAPTERS

0:00 The 48.4% barrier
1:05 Honda e:HEV — 40%
2:25 Toyota Dynamic Force — 41%
3:55 Nissan e-Power — 42%
5:10 Changan BlueCore — 44.28%
6:30 BYD DM-i — 46.5%
7:50 Geely Thor EM Hybrid — 47.26%
9:30 Chery Super Hybrid System — 48%
10:50 Dongfeng Mach 1.5T — 48.09%
12:20 Geely i-HEV — 48.4% (world record)
14:10 The only engine that beats it
15:05 What this ranking really tells us

🔧 KEY FIGURES

Geely i-HEV — 48.4%, Guinness certified, 2.22 L/100 km
Dongfeng Mach 1.5T — 48.09%, first to break 48%
Chery SHS — 48%, 26:1 expansion ratio
Geely Thor EM 2.0 — 47.26%, 2,608 km world record
BYD DM-i 5th gen — 46.5%
Changan BlueCore — 44.28%, world-first 500 bar injection
Nissan e-Power — 42%, built in Sunderland
Toyota Dynamic Force — 41%
Honda e:HEV — 40%
Mercedes-AMG F1 — over 50% (not a road car)

Which one surprised you most? Let me know in the comments.

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