The straight-4 is an internal combustion engine with four cylinders aligned in one row. This is the most common configuration used in cars with an engine size up to 2.0, in some cases up to 2.6 litres.
... joint-king of Castile with his mother (who was insane), and also inherited Aragon, Navarre, Granada, Naples, Sicily, Sardinia, and Spanish America[?]. After the death of ...