T1 – and Forced-induction (limited production) – – 2020 SSC Tuatara – and Highest specific engine output (power/unit displacement) Petrol (naturally aspirated) piston engine – per litre – 2008 Ariel Atom 500 3.0 L V8 Petrol (forced-induction) piston engine – per litre – 2022 Mercedes-AMG One turbocharged V6 Biofuel piston engine – per litre – 2020 Koenigsegg Jesko twin-turbocharged V8 on E85 fuel Diesel engine (naturally aspirated) – per litre – 1993 Mercedes E 300 diesel DIN 2.996 L OM606 I6 Diesel engine (forced-induction) – per litre – 2020 BMW Alpina D5 S 3.0 L I6 triturbo Pistonless rotary engine (naturally aspirated) – per litre – Mazda RX-8 Renesis JIS 1.3 L Pistonless rotary engine (forced-induction) – per litre – Mazda RX-7 JIS 1.3 L Highest power by cylinder count (Production Cars) Two-cylinder – – – 2007 Fiat 500 Three-cylinder – – – 2020 Koenigsegg Gemera Four-cylinder – – – 2022 Mercedes-AMG C 63 S E Performance 4MATIC+ Five-cylinder – – – 2022 KTM X-Bow GT-XR Six-cylinder – – – 2020 Nissan GT-R50 by Italdesign Eight-cylinder – – – 2020 Hennessey Venom F5 Ten-cylinder – – – 2015 Dodge Viper Twelve-cylinder – – – 2021 Aston Martin Valkyrie Sixteen-cylinder – – – 2022 Bugatti Chiron Super Sport Torque Highest torque by engine type Forced induction petrol engine – – 2020 SSC Tuatara, V8 Naturally aspirated petrol engine – – 2013-2017 Dodge Viper, V10 Forced induction diesel engine – – 2020 (2021 MY) RAM Heavy Duty, I6 Naturally aspirated diesel engine – – 1988–94 Ford F-250/350 IDI diesel, V8 Electric motor – – 2021 Rimac Nevera Hybrid engine – – Koenigsegg Gemera Highest torque by body style Car – – 2020 Koenigsegg Gemera, hybrid 3-cylinder + 4 electric motors, Pickup truck – – 2020 (2021 MY) RAM Heavy Duty, R6 SUV – – Audi Q7 V12 TDI, V12 diesel Van – – 2014 Chevrolet Express and GMC Savana, V8 diesel Highest specific torque (torque/unit displacement) The mean effective pressure (MEP) is a useful comparison tool, giving the average cylinder pressure exerted on the piston. Petrol engine (naturally aspirated) – MEP , per litre – 2019 BAC Mono R Petrol engine (forced-induction) – MEP , per litre – 2014 Mitsubishi Lancer Evolution X FQ440 MR Petrol engine (naturally aspirated pistonless rotary engine) – MEP , per litre – 2005 Mazda RX-8 Petrol engine (forced-induction pistonless rotary engine) – MEP , per litre