Exhibit 99.25 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-E KEY PERFORMANCE FACTORS May 31, 2001 Expected B Maturity 4/15/2008 Blended Coupon 5.0460% Excess Protection Level 3 Month Average 7.47% May, 2001 7.03% April, 2001 7.75% March, 2001 7.63% Cash Yield19.68% Investor Charge Offs 5.45% Base Rate 7.20% Over 30 Day Delinquency 4.84% Seller's Interest 8.52% Total Payment Rate14.20% Total Principal Balance$58,203,705,030.43 Investor Participation Amount$882,400,000.00 Seller Participation Amount$4,958,014,468.94