Toyota's mighty little GR Yaris has received a mid-life update.
Headline improvement is the 1.6-liter three-cylinder turbocharged
engine, which gets higher boost pressure, high fuel injection pressure,
strengthened valvetrain, more heat-resisting exhaust valves, lighter
pistons and more durable piston rings, among others, to lift output
from 261 to 280 hp (DIN) and peak torque from 265 to 288 lbft. That's
just the European version. For Japanese domestic version, it improves
even more, from 272 to 304 hp (now matching GR Corolla) and torque from
273 to 295 lbft. Moreover, the torque curve is no peakier, as it is
unchanged from idle until 3000 rpm where the old engine peaked, then
rises further to the new peak 250 rpm later and maintains the gap until
7000 rpm redline.
To cope with more torque, the 6-speed manual gearbox is strengthened,
but more surprising is the introduction of an automatic gearbox option.
It is an 8-speed torque converter auto, but Toyota guarantees sportier
shift program and quick shift times, accompanied with more gears hence
closer ratios, it is 0.3s quicker than the 6-speed manual from rest to
60 mph, while lap time on track will be quicker as well. The auto box
adds 20 kg though.
No performance figures are available yet, but you can safely assume
0-60 starts with a "4".
The GT-Four all-wheel drive system keeps its hardwares of a multi-plate
clutch for torque split and a Torsen LSD at each axle like the previous
Circuit pack setup, which is now the only option. However, the center
torque split programming has been revised. While Normal mode remains
60:40, Sport mode is scaled back from 30:70 to 53:47 (probably to
improve durablility of the multi-plate clutch). Meanwhile the previous
50:50 Track mode is now variable between 60:40 to 30:70, depending on
the judgment of computer. It sounds a setback for playfulness, but it
is hard to doubt Gazoo Racing's experience gained in WRC and track
racing.
As for chassis, the body is strengthened with additional spot welds and
adhesives. The front struts are fixed more rigidly with additional
bolts so that camber changes under load are minimalized. All suspension
springs are stiffer, while front anti-roll bar is slightly thicker.
They should reduce body roll. No changes for the wheels, tires or
brakes.
Outside, alterations to the sheet metal is limited. The front intakes
get larger to improve cooling to radiators and brakes. The front grille
is changed from plastic to mesh steel to keep stones from damaging the
radiators.
Inside, the best news is that the driver seat is now mounted 25mm lower
in response to criticisms. Likewise, the dashboard's highest point is
lowered by 50mm to avoid blocking forward view. Less amusing is the new
dashboard design, which looks as if inspired by buses or trucks, even
though the new LCD instrument (finally replacing analogue one) and
driver-oriented infotainment screen are guaranteed to be more user
friendly.