Problems and malfunctions - 1.2 TDI engine. As mentioned above, the initially offered 1.2 TDI had an extremely poor work culture and poor dynamics. However, it offered very high reliability, which went into low operating costs. Other than the nozzle, there were no elements that were often broken. The new unit with the Common Rail system had Fuel consumption of the Ford can be miles off the published figure, not sure about the VW. Renault was usually getting low to mid 50s with the TCE 90. Skoda Octy I can get mid 50s from the 1.4 TSI 150 hp with the 7 speed DSG in eco setting which is good for a large car as the mk 3 Octy even if it is lightweight. According to official WLTP figures, our favourite engine, the 1.0 TSI 110, with a manual gearbox should average more than 50mpg and produce 124g/km of CO2. Reliability Survey but Volkswagen 5 Reliability; Open Gallery. Used Volkswagen Polo 2018-present review We’d stick with the mid-range 94bhp 1.0 TSI because it’s a flexible engine and shouldn’t cost you too much to run 1.0 TSI engine (three cylinder, cooling-water jacket crankcase/cylinder head and water pump module) Polo TSI BlueMotion - Fuel consumption in l/100 km: urban 5.2 - 5.0 / extra urban 3.7 - 3.6 / combined 4.2 -4.1; CO 2 emissions combined in g/km: 98 -94; efficiency class: A As the TBHP review mentions, "this engine begs to be driven hard"! Had the chance to take it for a spin on the highways. The engine stays around 2000 rpm at 100 kmph, doesn't feel strained at all. The is more than enough grunt on offer even at 100 kmph. At 120 kmph, the low frequency engine vibrations start to creep into the cabin. It mostly happens on cold starts and the initial pulling away first thing in the day. The best advice is to request the car be completely cold for your test drive. Tell them that if you see the temperature gauge above minimum when you start the car, you won't be able to go through with buying it. 2. jaypiniho. You’ve the choice of three petrol or two diesel engines. The entry-level petrol is a 1.0-litre 3cyl with 108bhp, next up is a 1.5-litre 4cyl with 148bhp, while the range-topper is a 187bhp 2.0 .

is the vw 1.0 tsi engine reliable