Exhibit 99.25 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-E KEY PERFORMANCE FACTORS June 30, 2001 Expected B Maturity 4/15/2008 Blended Coupon 5.0460% Excess Protection Level 3 Month Average 6.97% June, 2001 6.14% May, 2001 7.03% April, 2001 7.75% Cash Yield19.01% Investor Charge Offs 5.67% Base Rate 7.20% Over 30 Day Delinquency 4.78% Seller's Interest 8.00% Total Payment Rate14.15% Total Principal Balance$57,876,901,808.74 Investor Participation Amount$882,400,000.00 Seller Participation Amount$4,631,211,247.25