STEG simulator
Based on the official STEG residential BT tariff (in force since 2022-05-01) and the actual cliff-effect bracket pricing.
Season
Winter: heating is gas in Tunisia, no impact
Where do you drive?
Highway cruise speed
110 km/h
Terrain
Plug-in hybrid: pick the share of your monthly km driven on battery.
720 km on battery · 480 km on petrol
Look at your STEG bill — most homes are 3-5 kVA. Eco tariff requires ≤2 kVA.
Tunisian homes: 150-400 kWh in winter, 250-600 in summer (A/C).
Adding the EV bumps you from bracket 101-200 kWh @ 176 mill to 301-500 kWh @ 341 mill. The ENTIRE bill is now charged at the higher rate (STEG cliff effect).
Crossing the 300 kWh threshold also bumps your VAT rate from 7% to 13% on the entire bill.
No published WLTP electric consumption for this car — we used a 16 kWh/100km default. Numbers are indicative.
Cost of running the Mercedes-Benz Glc Hybride
113.14TND / month
≈ 94.3 mill/km driven ·115 kWh into battery
Petrol equivalent
212.52TND
You save
99.38TND
vs petrol
47%
Electric
60%
720 km · 115 kWh
Petrol
40%
480 km · 9.0 L · 22.73 TND
Home STEG bill comparison
We model the official STEG residential Basse Tension tariff (source, in force since 2022-05-01).
Critical: STEG uses the cliff-effect ("saut tarifaire"): once your monthly kWh exceeds a bracket, the entire bill is recharged at that bracket's price. This is why crossing 300 kWh adds ~12 TND for just 1 extra kWh.
On top of the energy price we add: 5 mill/kWh municipal surtax + 5 mill/kWh FTE + 700 mill/kVA/month redevance de puissance + VAT (7% if ≤300 kWh, 13% if >300 kWh).
AC charging is modeled at 90% wall-to-battery efficiency, DC at 95%. Petrol comparison uses an efficient 7 L/100km sedan at 2.53 TND/L (Octane-95, current price).