Evans delivered an impressive display to overcome extreme wet conditions, and even snow showers, to lead home eight-time world champion Sebastien Ogier by 1m17.7s.
Toyota completed an utter domination of the 22-stage asphalt event, with two-time world champion Kalle Rovanpera completing the podium, 1m46.5s adrift.
Evans set four fastest times across the four-day event, but it was his stunning display on Friday in horrendous wet conditions, that provided the platform for victory.
The Welshman started Friday in ninth after Thursday's Toyota Stadium super special but leapt into a 26.0s lead by the end of stage two following a brave performance on saturated roads that were made even more slippery by leaves and pine needles.
A lack of visibility caused by misted-up windscreens that affected all Rally1 cars only added to the challenge.
Organisers cancelled stage four such were the severity of the conditions.
Hyundai's Thierry Neuville emerged as Evans' nearest rival. The Belgian closed within 10.5s before running off the road at the first corner of stage six which ended his hopes. Neuville rejoined the rally on Saturday and claimed the full bonus Power Stage points.
Neuville's demise handed Evans a 44.4s lead over Ogier which ballooned to 1m49.9s by the end of the day. Ogier received a one-minute penalty after leaving service six minutes late following a repair to his GR Yaris' chassis, caused by contact with a barrier on stage five.
Evans was kept on his toes by the changeable weather conditions as snow briefly arrived on Saturday afternoon, but the Toyota driver remained in control throughout to seal victory from Ogier. The result clinched the runner-up spot in the championship for Evans.
Source: Autosport