diff --git a/lang/french.txt b/lang/french.txt
--- a/lang/french.txt
+++ b/lang/french.txt
@@ -2819,3 +2819,14 @@ STR_MAGLEV_VEHICLES                                             :Véhicules sur Maglev
 
 STR_TINY_BLACK                                                  :{BLACK}{TINYFONT}{COMMA16}
 
+STR_PURCHASE_INFO_COST_WEIGHT                                   :{BLACK}Prix: {GOLD}{CURRENCY}{BLACK} Poids: {GOLD}{COMMA16}t
+STR_PURCHASE_INFO_SPEED_POWER                                   :{BLACK}Vitesse: {GOLD}{VELOCITY}{BLACK}   Puissance: {GOLD}{COMMA32}hp
+STR_PURCHASE_INFO_RUNNINGCOST                                   :{BLACK}Coûts d'entretien: {GOLD}{CURRENCY}/an
+STR_PURCHASE_INFO_CAPACITY                                      :{BLACK}Capacité: {GOLD}{STRING} {STRING}
+STR_PURCHASE_INFO_DESIGNED_LIFE                                 :{BLACK}Concu en: {GOLD}{NUMU16}{BLACK}Durée de vie: {GOLD}{COMMA16} ans
+STR_PURCHASE_INFO_RELIABILITY                                   :{BLACK}Fiabilité Max.: {GOLD}{COMMA8}%
+STR_PURCHASE_INFO_COST                                          :{BLACK}Prix: {GOLD}{CURRENCY}
+STR_PURCHASE_INFO_WEIGHT_CWEIGHT                                :{BLACK}Poids: {GOLD}{COMMA16}t  ({COMMA16}t)
+STR_PURCHASE_INFO_COST_SPEED                                    :{BLACK}Prix: {GOLD}{CURRENCY}{BLACK} Vitesse: {GOLD}{VELOCITY}
+STR_PURCHASE_INFO_AIRCRAFT_CAPACITY                             :{BLACK}Capacité: {GOLD}{COMMA16} passagers, {COMMA16} sacs de courrier
+STR_PURCHASE_INFO_PWAGPOWER_PWAGWEIGHT                          :{BLACK}Wagons Motorisés: {GOLD}+{COMMA16}hp{BLACK} Poids: {GOLD}+{COMMA8}t