In fact it is only true as, according to Bentley the new diesel was "co-developed" with Audi. And it should be remembered that Audi and Bentley are part of Volkswagen AG.
However, since posting this blog Bentley has responed and the new V8 diesel has an alumium cylinder block.
TDI Co-developed with Audi
But the question remains: Whose engine is it? Is it based on the Audi 4-litre turbocharged V8 engine which has a compacted graphite iron (CGI) vee cylinder block sourced from Bruhl in Germany?
According to Bentley its new V8 diesel has an aluminium vee block and the engine itself was "co-developed" with Audi and "as such is built at a facility in Europe". And the vee block does not use either steel or iron liners, but instead has APC-coated bores.
Bentley does however add that the “addition of Selective Catalytic Reduction (SCR) contributes to lower nitrous oxides. Combined with Bentley’s stop-start system; class-leading CO2 emissions of 210 g/km; and an impressive range of over 1,000 km between fuel stops, this technology puts the Bentayga Diesel at the forefront of advanced engine efficiency.”
But maybe Bentley owners are not too bothered who develops and manufactures the engine under the bonnet, only that the powertrain gives “peerless performance”.
Customer deliveries will begin in Europe early next year, with entry into Russia, South Africa, Australia, New Zealand and Taiwan planned across the rest of 2017.