diff --git a/obd.cabal b/obd.cabal
--- a/obd.cabal
+++ b/obd.cabal
@@ -1,5 +1,5 @@
 name:                obd
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:            Communicate to OBD interfaces over ELM327
 description:
     Haskell library to communicate with OBD-II over ELM327,
diff --git a/src/System/Hardware/ELM327/Car/MAP.hs b/src/System/Hardware/ELM327/Car/MAP.hs
--- a/src/System/Hardware/ELM327/Car/MAP.hs
+++ b/src/System/Hardware/ELM327/Car/MAP.hs
@@ -34,8 +34,8 @@
 -- | Create a car that uses the intake manifold absolute pressure (MAP)
 -- to calculate fuel consumption.
 mapCar :: MonadIO m => MAPProperties -> Car (ConT m)
-mapCar p = (\c -> (Car.massAirFlowRate .~ massAirFlowRate' p c) c) .
-           (\c -> (Car.engineFuelRate  .~ engineFuelRate'  p c) c) $
+mapCar p = (\c -> (Car.engineFuelRate  .~ engineFuelRate'  p c) c) .
+           (\c -> (Car.massAirFlowRate .~ massAirFlowRate' p c) c) $
            defaultCar
 
 -- | Calculate MAF from RPM, MAP and IAT