Glossary entry (derived from question below)
English term or phrase:
underfloor engine
Portuguese translation:
motor montado sob o chassi.
English term
Germany
Top-notch Portuguese expert!
Native in: Portuguese 
, German 
Works in: German to Portuguese, English to Portuguese, Portuguese to English, and 3 more.
underfloor engine
Proposed translations
Electric Engineer/Military
Native in: Portuguese
Works in: English to Portuguese, Portuguese to English
motor montado sob o chassi.
Sug.
Uma opção.
- Motor traseiro montado sob o chassis 228/265 kW (310/ 360 CV) ISO*, Para a construção de autocarros de carreira com piso rebaixado, nas versões com volante ...
www.man-mn.pt/pt/Bus/Chassis.jsp
Portugal
Accurate, timely, professional,demanding
Native in: English , Portuguese
Works in: English to Portuguese, Portuguese to English, Spanish to Portuguese, and 5 more.
internal-combustion engine
--------------------------------------------------
Note added at 28 mins (2008-05-11 14:49:54 GMT)
--------------------------------------------------
ou seja, motor de combustão interno
Portugal
Accurate, timely, professional,demanding
Native in: English , Portuguese
Works in: English to Portuguese, Portuguese to English, Spanish to Portuguese, and 5 more.
motor horizontal
Norway
Salvador Scofano and Gry Midttun
Engineer:Oil&Gas/Electron/Finan/Law/HSEQ
Native in: Norwegian , Portuguese
Works in: English to Portuguese, Norwegian to Portuguese, Portuguese to Norwegian, and 19 more.
motor central
motor montado debaixo do assoalho
Portugal
Maria Teresa Borges de Almeida 
30+ years translating EU documents
Native in: Portuguese (Variant: European/Portugal)
Works in: English to Portuguese, French to Portuguese, Spanish to Portuguese, and 1 more.
motor horizontal localizado no entre eixos
O B58 inovou o mercado rodoviário nos anos 80 com seu motor horizontal localizado no entre eixos
Independentemente da carroceria, não há articulado para bater os modelos com motor horizontal. A desvantagem de não oferecer opção de piso baixo em função da localização do motor é recompensada pelo piso baixo com motor engavetado no entre-eixos
Discussion
Underfloor mid-engine:
A design, introduced on the Toyota Previa minivan, where the engine is located below the passenger compartment, between front and rear.