As we mentioned before, and is probably common knowledge by now, the Jetta shares almost all of its underpinnings with the architecture of the Volkswagen Golf V. Talking about its technical bits is therefore pretty much like describing a "Golf with a tail", as some people call it.
The highly-touted TSI engines began appearing on some Volkswagen models about three years ago, first on the Golf, and then on the rest of the compact range. On the course of these years they also made their appearance on the Jetta, in different configurations. Unfortunately, we didn't get the chance to drive the "twincharger" version, but the 122 horsepower one, which delivers these figures with the help of "only a puny" turbocharger.
Even so, the compact turbocharged four-cylinder deliver quite an impressive surge of torque from low down on the rpm scale, while the fuel economy isn't half bad. Considering the conditions of our short test drive, we didn't get to fully acknowledge its entire attributes and/or downsides, but we can honestly say this is quite a small marvel of modern engineering.
The 200 Nm (147.5 lb ft) of torque could as well belong to a two-liter normally-aspirated engine, while the fuel economy appears to be that of a 1.6 liter from the same category of intake. Unlike its higher-powered sibling, the "T" in the "TSI" version we experienced doesn't stand for "Twincharged" but for "turbocharged" , while the "S" and the "I" stand for "stratified injection. That is all of course a fancy name for a directly-injected turbocharged engine, whose benefits go well beyond the marketing.Continue reading