Boasting an eye-popping 184 hp/L, Volvo’s turbocharged and supercharged 4-cyl. Polestar started life as a racing engine before it found its way into family haulers.
Infiniti engineers devoted 4 years to developing the VC-Turbo engine for prime time. It launches in March in the ’19 Infiniti QX50 (see related story: Infiniti’s Variable-Compression Engine Packs Punch).
Modifying the compression ratio of a running engine sounds like a recipe for disaster, but after driving Nissan’s variable-compression 4-cyl. we can attest it’s ready for production.
London Mayor Sadiq Khan has decided to move up by 17 months the effective date of a regulation imposing daily fines of £100 on owners of commercial diesel vehicles that fail to meet the latest Euro VI emissions standards.