| 22.3.1958 | 12 h Sebring | 8 | D-type | Sanderson / Bueb | Ecurie Ecosse | DNF |
| 22.3.1958 | 12 h Sebring | 9 | D-type | Flockhart / Gregory | Ecurie Ecosse | DNF |
| 22.3.1958 | 12 h Sebring | 12 | D-type | Cunningham / Hansgen | Alfred Momo | DNF |
| 22.3.1958 | 12 h Sebring | | D-type | Jack Ensley | Jack Ensley | DNA |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 2 | XK120 | Frank Morrill | | 5th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 69 | XK120 | Robert Beale | | 27th |
| 23.3.1958 | SCCA Regional Stockton [Production +1.6] | 105 | XK120 | George Heaney | | 8th |
| 23.3.1958 | Preliminary Stockton [Novice Production +1.6] | 154 | XK120 | Al Jamieson | | 24th |
| 29.3.1958 | BARC Mallory Park [Handicap B] | 44 | C-type | Mike Salmon | Mike Salmon | 4th |
| 29.3.1958 | BARC Mallory Park [S+1.1] | 45 | XK150 | Miss Rosemary Massey | Rosemary Massey | DNF |
| 29.3.1958 | BARC Mallory Park [S+1.1] | 46 | XK120 | Peter Sargent | Peter Sargent | 4th |
| 29.3.1958 | BARC Mallory Park [S+1.1] | 47 | XK120 | John Fredman | H. J. Fredman | 7th |
| 30.3.1958 | Willow Springs [Main] | 19 | XK140 | Kay Furcho | Kay Furcho | DNA |
| 30.3.1958 | Willow Springs [Production +1.6] | 19 | XK140 | Kay Furcho | Kay Furcho | DNA |
| 30.3.1958 | SCC-BC Abbotsford [Main] | 51 | D-type | Rattenbury | | 1st |
| 30.3.1958 | SCC-BC Abbotsford [Modified +1.5] | 51 | D-type | Rattenbury | | 1st |
| 30.3.1958 | Willow Springs [Main] | 169 | XK140 | Bob Kudler | Advance Neon | DNA |
| 30.3.1958 | Willow Springs [Production +1.6] | 169 | XK140 | Bob Kudler | Advance Neon | DNA |
| 30.3.1958 | Willow Springs [Main] | | XK140 | Elgin Holmes | | 2nd |
| 30.3.1958 | Willow Springs [Ladies] | | XK140 | Kay Furcho | | 2nd |
| 30.3.1958 | Willow Springs [Production +1.6] | | XK140 | Elgin Holmes | | 2nd |
| 5.4.1958 | BRSCC Full Sutton [PS] | 46 | Mk VII | M. E. Marsh | M. E. Marsh | DNA |
| 5.4.1958 | BRSCC Full Sutton [PS] | 51 | XK120 | D. Chippindale | D. Chippindale | DNA |
| 5.4.1958 | BRSCC Full Sutton [PS] | 58 | Mark I 3.4 | Phil Walton | P. G. Walton | 8th |
| 5.4.1958 | BRSCC Full Sutton [PS] | 68 | Mark I 3.4 | D. B. Houston | D. B. Houston | DNA |
| 5.4.1958 | BRSCC Full Sutton [SR/R] | 92 | D-type | Jim Clark | Border Reivers | 1st |
| 5.4.1958 | BRSCC Full Sutton [Formula Libre] | 92 | D-type | Jim Clark | Border Reivers | 1st |
| 7.4.1958 | Sussex Trophy Goodwood | 69 | D-type | Duncan Hamilton | | 3rd |
| 7.4.1958 | Sussex Trophy Goodwood | 79 | D-type | Maurice Charles | | 6th |
| 7.4.1958 | National Brands Hatch [Formula Libre] | 106 | C-type | Gordon Lee | Gordon Lee | 5th |
| 12.4.1958 | Grand Central [Sports] | 3 | D-type | Jimmy de Villiers | | 1st |
| 12.4.1958 | Grand Central [R+1.4] | 3 | D-type | Jimmy de Villiers | | 1st |
| 12.4.1958 | Grand Central [1820 Settlers] | 3 | D-type | Jimmy de Villiers | | 3rd |
| 12.4.1958 | British Empire Trophy | 60 | D-type | Peter Blond | J. C. Broadhead | DNF |
| 12.4.1958 | British Empire Trophy | 69 | D-type | James Forbes Clark | J. F. Clark | DNQ |
| 12.4.1958 | British Empire Trophy | 74 | D-type | Duncan Hamilton | J. Duncan Hamilton | 4th |
| 12.4.1958 | British Empire Trophy | 75 | D-type | Jonathan Sieff | J. Sieff | DNQ |
| 13.4.1958 | SCCA Regional Palm Springs [BP+CP+DP+EP] | 97 | XK140 | Andy Nielsen | Andy Nielson | 10th |
| 13.4.1958 | SCCA Regional Palm Springs [BM+CM+DM+EM] | 127 | D-type | Bill Krause | Bill Krause | 6th |
| 13.4.1958 | GP Avandaro | | Special | Don Hulette | | DNF |
| 13.4.1958 | GP Avandaro | | XKSS | Bob Stonedale | | raced |
| 19.4.1958 | Aintree 200 [S+1.1] | 76 | D-type | Ivor Bueb | Ecurie Ecosse | 4th |
| 19.4.1958 | Aintree 200 [S+1.1] | 77 | D-type | Jack Fairman | Ecurie Ecosse | 7th |
| 19.4.1958 | Aintree 200 [S+1.1] | 78 | D-type | Duncan Hamilton | Duncan Hamilton | 6th |
| 19.4.1958 | Aintree 200 [S+1.1] | 79 | D-type | Maurice Charles | Maurice Charles Motors Ltd. | 12th |
| 19.4.1958 | Aintree 200 [S+1.1] | 80 | D-type | Jonathan Sieff | Jonathan Sieff | 14th |
| 19.4.1958 | Aintree 200 [S+1.1] | 82 | D-type | Jimmy Somervail | Border Reivers | DNA |
| 19.4.1958 | Aintree 200 [S+1.1] | 83 | D-type | Jim Clark | Border Reivers | DNA |
| 19.4.1958 | Aintree 200 [S+1.1] | 84 | C-type | Mike Salmon | Gerrards Cross Motor Co. Ltd. | 13th |
| 20.4.1958 | San Salvador | 1 | D-type | Mauricio Miranda | Mauricio L. Miranda | DNF |
| 20.4.1958 | SCCA Regional Galveston [Modified] | 12 | C-type | Mason O'Keiff | | 7th |
| 20.4.1958 | Preliminary Galveston [CM+DM+EM] | 16 | XKSS | Bob Stonedale | | DNS |
| 20.4.1958 | SCCA Regional Galveston [Modified] | 16 | XKSS | Bob Stonedale | | DNS |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 39 | | Dudley Smolen | | 11th |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 42 | | John Hayes | | 8th |
| 20.4.1958 | SCCA National Marlboro [BM+CM+DM+EM+FM] | 52 | C-type | Gordon MacKenzie | | 6th |
| 20.4.1958 | SCCA National Marlboro [BM+CM+DM+EM+FM] | 61 | D-type | Ed Crawford | Briggs Cunningham | 4th |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 117 | | Henry Grimes | | DNF |
| 20.4.1958 | SCCA National Marlboro [BM+CM+DM+EM+FM] | 189 | D-type | Jim Robinson | | DNF |
| 20.4.1958 | SCCA National Marlboro [BP+CP+DP] | 190 | XK140 MC | Jerome Robinson | | 10th |
| 26.4.1958 | Preliminary Louisville [Novice] | | D-type | | | raced |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 1 | XK120 M | Kenneth MacDonald | | 17th |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 34 | C-type | Gordon MacKenzie | | DNA |
| 27.4.1958 | WJC Charterhall [R/S+500] | 41 | D-type | Jim Clark | Border Reivers | DNF |
| 27.4.1958 | WJC Charterhall [S+1.5] | 41 | D-type | Jimmy Somervail | Border Reivers | ?th |
| 27.4.1958 | SCCA Regional Lime Rock [CM+DM+EM+FM+GM] | 49 | D-type | George Constantine | | DNA |
| 27.4.1958 | WJC Charterhall [S+1.5] | 52 | XK150 | Charles Ramsay | C. A. Ramsay | DNA |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 52 | C-type | Gordon MacKenzie | | 1st |
| 27.4.1958 | SCCA Regional Louisville [BM+CM+DM+EM+FM+GM] | 54 | XKSS | Grove | | raced |
| 27.4.1958 | WJC Charterhall [S+1.5] | 55 | C-type | Alan Ensoll | A. Ensoll | ?th |
| 27.4.1958 | WJC Charterhall [R/S+500] | 55 | C-type | Alan Ensoll | A. Ensoll | raced |
| 27.4.1958 | WJC Charterhall [S+1.5] | 57 | D-type | Reg Harris | J. C. Broadhead | ?th |
| 27.4.1958 | WJC Charterhall [R/S+500] | 57 | D-type | Reg Harris | J. C. Broadhead | raced |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 58 | XK140 | Richard Driscoll | | 14th |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 60 | XK150 S | Walt Hansgen | | 4th |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 76 | Special | Gerry Georgi | | 2nd |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 80 | XK140 MC | Patrick Pratt | | DNA |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 139 | XK140 MC | | | 11th |
| 27.4.1958 | SCCA Regional Lime Rock [BM+BP+CP+UR+FIII] | 162 | XK140 MC | Louis Hatcher | | 15th |
| 27.4.1958 | SCCA Regional Louisville [BM+CM+DM+EM+FM+GM] | | XKSS | Dave Causey | | 6th |
| 27.4.1958 | Preliminary Louisville [BP+CP+DP] | | | Downing | | 8th |
| 27.4.1958 | SCCA Regional Louisville [BM+CM+DM+EM+FM+GM] | | D-type | Jack Ensley | | raced |
| 27.4.1958 | Preliminary Louisville [BM+CM+DM+EM+FM+GM] | | D-type | Jack Ensley | | 4th |
| 3.5.1958 | Daily Express Silverstone [S+1.5] | | D-type | Duncan Hamilton | | 7th |
| 3.5.1958 | Daily Express Silverstone [S+1.5] | | D-type | Innes Ireland | | 8th |
| 3.5.1958 | Daily Express Silverstone [S+1.5] | | D-type | Jack Fairman | Ecurie Ecosse | raced |
| 3.5.1958 | Daily Express Silverstone [S+1.5] | | D-type | Ivor Bueb | | 6th |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 39 | XK140 MC | Dudley Smolen | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 39 | XK140 MC | Dudley Smolen | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 49 | D-type | George Constantine | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 49 | D-type | George Constantine | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 60 | D-type | Walt Hansgen | Briggs Cunningham | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 60 | D-type | Walt Hansgen | Briggs Cunningham | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 62 | XK150 S | Wallace | Briggs Cunningham | ?th |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 62 | XK150 S | Wallace | Briggs Cunningham | 12th |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 117 | | Henry Grimes | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 117 | | Henry Grimes | | DNA |
| 4.5.1958 | Preliminary Virginia [BP+CP+BM+CM+DM+EM+FM] | 189 | D-type | Jim Robinson | | DNA |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 189 | D-type | Jim Robinson | | 8th |
| 4.5.1958 | SCCA National Virginia [BM+CM+DM+EM+FM+BP+CP] | 190 | XK140 MC | Jerome Robinson | | DNA |