The Sleeper (Sleeper, in British English also Q-Car) is a car that looks outwardly inconspicuous and tuned for maximum performance. There are even cars whose owners deliberately pay little attention to the exterior (rare laundry etc.), which takes the understatement to extremes. The English slogan for this is "all go, no show".
Kia Sorento with Chevy V8 under the hood
Emergence of the term "Sleeper"
The US name "Sleeper" comes from the use of Sleeper Agents (Sleepers, as they place terrorist organizations in enemy territory today), the British name is borrowed from the Q-ships of the Royal Navy. These were in the Second World War as merchant ships disguised heavily armed warships. The British prosecutors had already in the 1950er years patrolling through their cities harmless-looking cars. Certain vehicle models were suitable even then and are also very good as sleeper today. Thus, the Chrysler C-300, a normal production car, from 1955 partially equipped with a FirePower V8 engine (5,4 l, 300 PS [220 kW]). At that time, he became the most powerful US passenger car.
A sleeper from the factory: the 1955 Chrysler C-300 5,4l V8
It was followed by the end of the 1950er years even stronger Chrysler models with up to 375 PS. However, just the Chrysler C-300 series was a rather rare model that looked so exotic that it could hold poor the sleeper status, which aims straight at inconspicuous. Mercedes took a slightly different approach with the 300S EL 6.3, which looks perfectly normal on the outside and is also very powerful. A typical Sleeper model is the Lotus Omega, based on the Opel Omega. All of these vehicles were deliberately designed by their manufacturers as Sleeper. Some modern Seat models also fall into this category. They do great things and look very unobtrusive.
Sleeper by deliberately tuning the owner
Even more interesting than the manufacturer-produced Sleeper are those vehicles whose owners make them by deliberate tuning to Sleepern. The engine power can be significantly modified (if necessary through another engine), however, the other components - brakes, body - have to withstand the increased performance, otherwise the vehicle will not pass through the HU. Sometimes the modification is also visible: the car drives on wider tires, has a lower standing position and sounds different. In many cases, the higher performance can be seen on the exhaust. How far the performance increase should go, the taste and of course the starting point and the purse of the owner left. There are drivers who free their car of any unnecessary ballast for road races. They disassemble the rear seats, take no spare tires and even replace individual parts such as the headlights with lighter variants. If the modification goes too far, the vehicle could lose its approval. Therefore, a sleeper tuning should always be performed in the workshop.
Of course that had not happened yet!
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