INTERNATIONAL JOURNAL OF RESEARCH IN AERONAUTICAL AND MECHANICAL ENGINEERING ISSN (ONLINE): 2321-3051 Vol.3 Issue.3, March 2015. Pgs: 10-18 Madan M. Jagtap, Ashir Hawaldar, Niraj Jgtap, Saurabh Jain 10 Review Paper on Reliability Improvement Warranties Madan M. Jagtap 1 , Ashir Hawaldar 2 , Niraj Jgtap 3 , Saurabh Jain 4 1 Saraswati College of Engineering, India, jagtap.aero@gmail.com 2 Sarasvati College of Engineering, India, ashirhawaldar@gmail.com 3 Sarasvati College of Engineering, India, niraj250819@gmail.com 4 Sarasvati College of Engineering, India, Saurabh.jn1991@gmail.com Abstract An automobile with thousands of parts and interactions among them is a highly complex product. It makes detailed testing/analysis during product development, manufacturing, and assembly a prohibitively enormous, if not infeasible, task. Thus, when the vehicle is put on the market, the likelihood of unexpected poor quality and reliability resulting in high warranty costs is not uncommon. Success during product development, manufacturing, and assembly is often judged by lack of quality and reliability Key words: Warranty, Reliability, RIW. 1. Introduction The reliability improvement warranty is a class of warranty Policies those are applicable for expensive products that are especially built for customers. The products can be divided into two groups: (i) new acquisitions by defense involving new state-of-the-art technologies, and (ii) complex systems (such as locomotives, power generating units, etc.) which are custom built to serve the needs of commercial or industrial customers. This requires assessing reliability at different stages of the process and modifications to improve reliability if the agreed performance measures are not achieved. The measure usually used to assess product reliability and improvements there in is the mean time between failures (MTBF), and most RIWs include an MTBF. However, RIW can include any agreed-upon measure of reliability. As a result, RIW policies are often quite complex. In contrast to a consumer-type warranty, where the manufacturer decides on the warranty policy based on several factors, as each RIW is a unique warranty contract, often covering only a few items and carefully negotiated by the customer and the manufacturer. As a result, the cost analysis (for both manufacturer and customer) of each RIW policy poses new challenges, depending on the reliability terms included in the policy. In this paper, we deal with the major issues associated with RIW policies. The outline of the paper is as follows. we take a more detailed look at some of the specific features of such policies. Where we define the six different stages of the process and compare it with that for products sold with non-RIW policies. Finally, it is worth noting that in the RIW literature, the manufacturer is often referred