Mercedes-Benz 190E (W201) Wind Tunnel Airflow & Pressure Distribution Diagram

This document is a scanned aerodynamic (wind tunnel) schematic showing the pressure coefficient (cp) distribution around the body of a Mercedes-Benz compact sedan, drawn in side profile. Yellow and red shaded lobes plotted perpendicular to the body surface represent measured surface pressure values along the hood, windshield, roof, rear window, trunk lid, and front and rear ends of the car. A scale annotation at the top center reads approximately 'cp = 0.2 / 100 mm', indicating the plotting scale for the pressure coefficient curves, with a vertical reference scale marked with values such as 0.8 and 0.4. An inset detail at the upper right appears to enlarge one region of the pressure distribution. A user has added blue arrows and a red 'X' near the front hood/cowl area, apparently to highlight airflow direction at that location. A small reference code (appearing as 'M-1-53') is printed at the lower right. The scan resolution is very low, so circled data-point numbers and most fine annotations are illegible. The document itself contains no explicit year, model designation, or part numbers, though the body shape matches the Mercedes-Benz 190 (W201) sedan claimed by the uploader's filename.