diff --git a/carculator_truck/model.py b/carculator_truck/model.py
index 044d460..ccc7d34 100644
--- a/carculator_truck/model.py
+++ b/carculator_truck/model.py
@@ -24,7 +24,6 @@ def finite(array, mask_value=0):
 
 
 class TruckModel(VehicleModel):
-
     """
     This class represents the entirety of the vehicles considered, with useful attributes, such as an array that stores
     all the vehicles parameters.
@@ -163,9 +162,9 @@ def set_cargo_mass_and_annual_mileage(self):
 
             for s in self.array.coords["size"].values:
                 cycle = self.cycle if isinstance(self.cycle, str) else "Urban delivery"
-                self.array.loc[
-                    dict(size=s, parameter="kilometers per year")
-                ] = annual_mileage[cycle][s]
+                self.array.loc[dict(size=s, parameter="kilometers per year")] = (
+                    annual_mileage[cycle][s]
+                )
 
     def adjust_cost(self):
         """
@@ -958,9 +957,11 @@ def remove_energy_consumption_from_unavailable_vehicles(self):
                 # as a result of curb mass being too large
                 vals = np.asarray(
                     [
-                        np.round(v[2][0], 1)
-                        if (v[0][0] - v[1][0]) > 0
-                        else f"-{np.round(v[2][0])}-"
+                        (
+                            np.round(v[2][0], 1)
+                            if (v[0][0] - v[1][0]) > 0
+                            else f"-{np.round(v[2][0])}-"
+                        )
                         for v in (
                             self.array.sel(
                                 parameter=["gross mass", "driving mass", "cargo mass"],
@@ -978,9 +979,11 @@ def remove_energy_consumption_from_unavailable_vehicles(self):
                         parameter="is_available",
                         powertrain=pt,
                         year=y,
-                        value="reference"
-                        if "reference" in self.array.coords["value"]
-                        else 0,
+                        value=(
+                            "reference"
+                            if "reference" in self.array.coords["value"]
+                            else 0
+                        ),
                     ).values,
                     vals,
                     "/",