Abstract: Arguments often arise at every corner as to which one, carburetor or injector is better in term of performance. In this study therefore user perception of performance of carburetion and injection fuel systems for Mercedes-Benz cars is investigated. This was done by randomly sampling the opinions of the Mercedes-Benz users and maintenance specialists, through questionnaire administration and oral interview. Analysis of responses was done using a simple percentage of positive or negative response over the total responses. The results of the study showed that injection system is preferred for its overall performance, durability and efficiency, while carburetion system is satisfactory based on its spare parts availability and ease of maintenance.