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In current competitive environment automobile industry is under heavy pressure to reduce time to market. First time right design is an important aspect to achieve the time and cost targets. CAE is a tool which helps designer to come up with first time right design. This also calls for high degree of confidence in CAE simulation results which can only be achieved by undertaking correlation exercises. Fuel tank is one of the important system in vehicle. At the validation stage leak test is carried out to find the leakage in the tank. This test is regulatory requirement which also ensures that the spot weld joineries have sufficient strength. Same test was mapped in CAE and high stress locations were identified. In test, strain gauging was done at the three selected locations. Paper highlights the test vs. CAE strain correlation and its finding. The effect of thinning is also discussed for the strain correlation of fuel tank.