The new engine offers improved performance, better fuel efficiency, lower noise levels and reduced emissions over the existing Duratorq diesel.
The engine is initially offered as a 2.0-litre, 125 bhp option on front-wheel drive Transit models and in all Tourneo Minibuses.
Steve Parker, commercial vehicles director, Ford of Britain, said: 'The TDCi engine marks the introduction of second generation common rail technology to Ford commercial vehicles in the UK.
'We are offering this leading-edge diesel technology alongside the current engine range.
'The engine makes the Transit range an even more dependable business partner, particularly for customers who must cope with demanding delivery schedules where speed and cost-efficiency are paramount.'
The new engine models have ABS brakes as standard. The 2.0-litre Duratorq TDCi develops 125 bhp at 3,800 rpm and peak torque of 210 lb-ft from 1,500 rpm through to 2,200 rpm. The 2.0-litre, 100 bhp engine will be still available.
The SWB 280 TDCi 125bhp model is £13,650 ex-VAT, £650 more than the 100bhp.