These latest spy shots seem to be indicating Opel is readying a facelift for the Astra GTC having recently refreshed the Astra Hatch and Sports Tourer. The GTC is expected to be powered by the new BiTurbo diesel unit rated at 195 horsepower and 295 pound-feet of torque. A new, larger, front grille will likely accommodate bigger air intakes to give the engine more air to breath, while a camouflaged bumper suggests changes are being prepared there too. The back is expected to remain relatively unchanged.