Exhibit 99.1 Page 5 Nissan Motor Acceptance Corporation Monthly Servicing Report -- Nissan Auto Receivables 1998-A Grantor Trust March 1, 1999 through March 31, 1999 A. ORIGINAL DEAL PARAMETER INPUTS (A) Original Total Portfolio $ $999,494,983.89 (B) Class A Certificate Ownership Interest of the Trust 89.00% (C) Original Class A Certificate Balance $ 889,550,535.00 (D) Class A Certificate Rate 5.45% (E) Original Class B Certificate Balance $ 109,944,448.89 (F) Class B Certificate Rate 5.45% (G) Servicing Fee Rate 1.00% (H) Original Weighted Average Coupon (WAC) 8.49% (I) Original Weighted Average Remaining Term (WAM) 42.58 months (J) Number of Contracts 93,300 (K) Class A Subordination Spread Account ("SSA") (i) Subordination Initial Deposit Percentage 1.00% (ii) Subordination Initial Deposit $ 9,994,949.84 (iii) Specified SSA Balance Percent 1.50% (iv) Specified SSA Balance $ 14,992,424.76 (v) Floor Percent 2.50% (vi) Floor Amount $ 24,987,374.60 (vii) Floor Trigger Amount $ 99,949,498.39 (L) Yield Supplement Reserve Account Initial Deposit $ 4,107,391.76 B. INPUTS FROM PREVIOUS MONTHLY SERVICER REPORTS (A) Total Portfolio Outstanding $ 851,006,321.78 (B) Total Portfolio Pool Factor 0.8514363 (C) Class A Certificate Balance $ 757,395,626.38 (D) Class A Certificate Factor 0.8514363 (E) Class B Certificate Balance $ 93,610,696.06 (F) Class A Pool Factor 0.7577783 (G) Subordination Spread Account Balance $ 14,992,424.76 (H) Yield Supplement Reserve Account Balance $ 3,066,353.01 (I) Outstanding Interest Advance $ 443,406.55 (J) Cumulative Net Losses for All Prior Periods 1,779,254.74 (K) Weighted Average Coupon of Remaining Portfolio (WAC) 8.51% (L) Weighted Average Remaining Term of Remaining Portfolio (WAM) 39.59 months (M) Number of Contracts 86,166 C. INPUTS FROM THE MAINFRAME (A) Simple Interest Loans (i) Principal Payments Received $ 40,972,576.80 (ii) Interest Payments Received $ 6,412,008.70 (iii) Repurchased Loan Principal $ 164,206.24 (iv) Repurchased Loan Interest $ 1,407.00 (B) Yield Supplement Release to Collection Account $ 196,958.97 (C) Yield Supplement Release to Seller $ 70,248.40 (D) Reimbursement of Previous Interest Advance $ 443,406.55 (E) Current Interest Advance Amount $ 24,831.21 (F) Weighted Average Coupon of Remaining Portfolio (WAC) 8.52% (G) Weighted Average Remaining Maturity of Remaining Portfolio (WAM) 38.75 months (H) Remaining Number of Contracts 83,536 (I) Delinquent Contracts Contracts Amount (i) 31-60 Days Delinquent 692 0.83% $ 7,461,863.00 0.92% (ii) 61-90 Days Delinquent 77 0.09% $ 815,199.14 0.10% (iii) 91 Days or More Delinquent 9 0.01% 101,468.83 0.01% D. INPUTS DERIVED FROM OTHER SOURCES (A) Collection Account Investment Income -- Paid to Seller $ 132,382.96 (B) Class A Subordination Spread Account Investment Income -- Paid to Seller $ 49,786.08 (C) Yield Supplement Reserve Account Investment Income -- Paid to Seller $ 11,870.09 (D) Aggregate Net Losses for Collection Period $ 1,058,774.65 (E) Liquidated Contracts (i) Gross Principal Balance of Liquidated Receivables $ 1,536,634.45 (ii) Net Liquidation Proceeds Received During the Collection Period $ 477,859.80 (iii) Recoveries Received During the Collection Period $ 0.00 (F) Number of Vehicles Repossessed During the Collection 150 Page 6 Nissan Motor Acceptance Corporation Monthly Servicing Report -- Nissan Auto Receivables 1998-A Grantor Trust March 1, 1999 through March 31, 1999 I. COLLECTIONS (A) Principal Payments Received (C(A)i) $ 40,972,576.80 (B) Interest Payments Received (C(A)ii) $ 6,412,008.70 (C) Aggregate Net Liquidation Proceeds Received (D(E)ii) $ 477,859.80 (D) Principal on Repurchased Contracts (C(A)iii) $ 164,206.24 (E) Interest on Repurchased Contracts (C(A)iv) $ 1,407.00 (F) Yield Supplement Amount Payments (C(B)) $ 196,958.97 (G) Total Collections (A+B+C+D+E+F) $ 48,225,017.51 (H) Net Interest Advance Amount (C(E-D)) $ (418,575.34) (I) Total Available Amount (G+H) $ 47,806,442.17 II. DISTRIBUTIONS (A) Principal Payments Received (C(A)i) $ 40,972,576.80 (B) Principal on Repurchased Contracts (C(A)iii) $ 164,206.24 (C) Gross Principal Balance of Liquidated Receivables (D(E)i) $ 1,536,634.45 (D) Total Principal Reduction (A+B+C) $ 42,673.417.49 (E) Class A Distributable Amount (i) Class A Monthly Interest Payment (A(D)*B(C)/12) $ 3,439,838.47 (ii) Monthly Principal to Class A (II(D)*A(B)) $ 37,979,341.57 (iii) Total Distributable Amount (i+ii) $ 41,419,180.04 (F) Class B Distributable Amount (i) Class B Monthly Interest Payment ((A(F)*B(E))/12) $ 425,148.58 (ii) Monthly Principal to Class B (II(D)-(E)ii) $ 4,694,075.92 (iii) Excess Collections (I(I)-(II(E)iii+(F)i+ii+(G)i)) $ 558,865.70 (iv) Total Distributable Amount (i+ii+iii) $ 5,678,090.20 (G) Required Distributions (i) Servicing Fee (A(G)*B(A)) $ 709,171.93 (ii) Unpaid Trustee Fees and Expenses $ 0.00 (iii) Class A Amount (II(E)iii) $ 41,419,180.04 (iv) Deposit to Class A Subordination Spread Account (If Positive (IV(G)-(A))) $ 0.00 (v) Class B Amount (IV(F)i) $ 5,678 090.20 (vi) Yield Supplement Account Release to Seller (V(C)) $ 70,248.40 (vii) Total Amount Distributed (i+ii+iii+iv+v+vi) $ 47,876,690.57 (H) Amount of Draw from Class A SSA (IV(B)) $ 0.00 (I) Sum of Draw from SSA and Total Available Amount (I(I)+IV(B)) $ 47,806,442.17 (J) Release from Yield Supplement Account to Seller (V(C)) $ 70,248.40 (K) Total Distributed Amount (I+J) $ 47,876,690.57 Class A Servicing Fee (II(G)i*A(B)) $ 631,163.02 III. POOL BALANCES AND PORTFOLIO INFORMATION Beg. of Period End of Period (A) Balances and Principal Factors (i) Total Pool Balance $851,006,321.78 $ 808,332,904.29 (ii) Total Pool Factor 0.8514363 0.8087413 (iii) Class A Certificate Balance $757,395,626.38 $ 719,416,284.81 (iv) Class A Certificate Factor 0.8514363 0.8087413 (v) Class B Certificate Balance $ 93,610,696.72 $ 88,916,620.80 (vi) Class A Pool Factor 0.7577783 0.7197798 (B) Portfolio Information (i) Weighted Average Coupon (WAC) 8.51% 8.52% (ii) Weighted Average Remaining Maturity (WAM) 39.59 months 38.75 months (iii) Remaining Number of Contracts 86,166 83,536 (C) Outstanding Interest Advance $ 443,406.55 $ 24,831.21 Page 7 Nissan Motor Acceptance Corporation Monthly Servicing Report -- Nissan Auto Receivables 1998-A Grantor Trust March 1, 1999 through March 31, 1999 IV. RECONCILIATION OF CLASS A SUBORDINATION SPREAD ACCOUNT ("SSA") (A) Beginning Class A SSA Balance (B(G)) $ 14,992,424.76 (B) Draw for Class A Distributable Amount and Servicing Fee (If Positive ((II(E)iii+(G)i)-I(I))) 0.00 (C) Amount Available for Deposit to the Class A SSA (If Positive (I(I)-II(E)iii-(G)i)) $ 5,678,090.20 (D) Class A SSA Balance Prior to Release (IV(A-B+C)) $ 20,670,514.96 (E) Class A Subordination Spread Account Required Amount (Was Trigger Hit?) $ 14,992,424.76 (F) Breakdown of Release to Class B Certificateholder (i) Class B Amount (Min(II(F)iv,IV(F)iii)) $ 5,678,090.20 (ii) Release from Class A SSA (iii-i) $ 0.00 (iii) Total Distribution to Class B Certificateholder (If Positive (D-E)) $ 5,678,090.20 (G) Ending Class A Subordinate Spread Account Balance (D-(F)iii) $ 14,992,424.76 V. RECONCILIATION OF YIELD SUPPLEMENT RESERVE ACCOUNT (A) Beginning Yield Supplement Reserve Account Balance (B(H)) $ 3,066,353.01 (B) Release to Collection Account (C(B)) $ 196,958.97 (C) Release to Seller (C(C)) $ 70,248.40 (D) Ending Yield Supplement Reserve Account Balance (A-B-C) $ 2,799,145.64 VI. NET LOSS AND DELINQUENCY ACCOUNT ACTIVITY (A) Aggregate Net Losses for Collection Period (VI(B)i-ii) $ 1,058,774.65 (B) Liquidated Contracts (i) Gross Principal Balance of Liquidated Receivables (D(F)i) $ 1,536,634.45 (ii) Net Liquidation Proceeds Received During the Collection Period (D(F)ii) $ 477,859.80 (C) Cumulative Net Losses for all Periods (VI(A)+B(J)) $ 2,838,029.39 (D) Delinquent and Repossessed Contracts Contracts Amount (i) 31-60 Days Delinquent 692 0.83% $ 7,461,863.00 0.92% (ii) 61-90 Days Delinquent 77 0.09% $ 815,199.14 0.10% (iii) 91 Days or More Delinquent 9 0.01% $ 101,468.83 0.01% (iv) Vehicles Repossessed During 150 0.17% #N/A #N/A the Collection Period (D(F)) VII. TESTS FOR INCREASE IN CLASS A SUBORDINATION SPREAD ACCOUNT BALANCE (A) Ratio of Net Losses to the Pool Balance as of Each Collection Period (i) Second Preceding Collection Period 0.88% (ii) Preceding Collection Period 1.39% (iii) Current Collection Period 1.49% (iv) Three Month Average (Avg(i,ii,iii)) 1.25% (B) Ratio of Number of Contracts Delinquent 60 Days or More to the Outstanding Number of Receivables as of Each Collection Period (i) Second Preceding Collection Period 0.17% (ii) Preceding Collection Period 0.14% (iii) Current Collection Period 0.10% (iv) Three Month Average (Avg(i,ii,iii)) 0.14% (C) Loss and Delinquency Trigger Indicator Trigger Was Not Hit (i) Number of Months Three Month Loss Average is Below Trigger 5 (ii) Number of Months Three Month Delinquency Average is Below Trigger 5 Page 8