Precisely that. Over here (Finland), modern diesels have heaters to compensate for that (so, because the engine does not produce excess heat, the heater burns s

Precisely that. Over here (Finland), modern diesels have heaters to compensate for that (so, because the engine does not produce excess heat, the heater burns some fuel to generate heat). The UK models may be stripping off the heaters for cost. I hear people don't even use winter tyres in Britain...