| 6.7.1958 | BMRC Charterhall [Sports Handicap] | 38 | #XKD 517 | Jimmy Somervail | Border Reivers | raced |
| 6.7.1958 | BMRC Charterhall [Racing Handicap] | 38 | #XKD 517 | Jim Clark | Border Reivers | 1st |
| 6.7.1958 | BMRC Charterhall [BMRC Trophy Handicap] | 38 | #XKD 517 | Jim Clark | Border Reivers | 2nd |
| 6.7.1958 | Hammond [BM+CM+DM+EM] | 77 | | C. K. Thompson | | 2nd |
| 6.7.1958 | Hammond [Main] | 77 | | C. K. Thompson | | 2nd |
| 6.7.1958 | Preliminary Minneapolis [Novice] | | #XKD 536 | John Barlass | Don Skogmo | 1st |
| 6.7.1958 | SCCA Regional Minneapolis [Main] | | #XKD 536 | Don Skogmo | Don Skogmo | 1st |
| 6.7.1958 | Preliminary Minneapolis [S+1.6] | | #XKD 536 | Don Skogmo | Don Skogmo | 1st |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 71 | #XKC 403 | Reg Harris | | 8th |
| 12.7.1958 | BRSCC Full Sutton [SR] | 71 | #XKC 403 | Reg Harris | | 6th |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 73 | #XKD 517 | Jim Clark | Border Reivers | 1st |
| 12.7.1958 | BRSCC Full Sutton [SR] | 73 | #XKD 517 | Jim Clark | Border Reivers | 1st |
| 12.7.1958 | BRSCC Full Sutton [SR] | 75 | #XKD 518 | Jonathan Sieff | | 2nd |
| 12.7.1958 | BRSCC Full Sutton [SR/R] | 75 | #XKD 518 | Jonathan Sieff | | 2nd |
| 19.7.1958 | GP Silverstone | 25 | | Innes Ireland | Ecurie Ecosse | 9th |
| 26.7.1958 | MCMC Oulton Park [Sports] | 20 | #XKC 403 | Reg Harris | J. C. Broadhead | 2nd |
| 26.7.1958 | MCMC Oulton Park [Formula Libre] | 20 | #XKC 403 | Reg Harris | J. C. Broadhead | 4th |
| 27.7.1958 | Snetterton | 76 | #XKD 511 | | | raced |
| 3.8.1958 | SCCA Regional Shelton [S+1.5] | 51 | #XKD 558 | Jim Rattenbury | | DNA |
| 3.8.1958 | SCCA Regional Minden [BM+CM+DM+EM] | 100 | #XKD 531 | Ray Seher | Ray Seher | DNA |
| 3.8.1958 | Preliminary Minden [Corvette+Porsche+Jaguar] | 100 | #XKD 531 | Ray Seher | Ray Seher | ?th |
| 4.8.1958 | NSCC Mallory Park [Formula Libre] | 48 | #XKD 517 | Jim Clark | Border Reivers | 2nd |
| 4.8.1958 | NSCC Mallory Park [S+1.5] | 48 | #XKD 517 | Jim Clark | Border Reivers | 1st |
| 4.8.1958 | BRSCC Brands Hatch [S+1.9] | 81 | #XKD 518 | Jonathan Sieff | Jonathan Sieff | 6th |
| 17.8.1958 | SCCA National Montgomery [BM+CM+DM+EM] | 149 | #XKD 545 | George Constantine | | DNF |
| 31.8.1958 | Courtland Trophy | 10 | #XKD 553 | Ed Rahal | | 1st |
| 31.8.1958 | Courtland [CM+DM+EM+FM+BP+CP+DP+EP] | 10 | #XKD 553 | Ed Rahal | | 3rd |
| 31.8.1958 | Santa Barbara [BM+CM+DM] | 127 | #XKD 519 | Bill Krause | | DNF |
| 31.8.1958 | Courtland [CM+DM+EM+FM+BP+CP+DP+EP] | | | C. K. Thompson, Jr. | | DNF |
| 31.8.1958 | Courtland Trophy | | | C. K. Thompson | | 2nd |
| 31.8.1958 | Deer Park [CM+DM+EM] | | #XKD 558 | Jim Rattenbury | | 1st |
| 6.9.1958 | Sunbac Silverstone [S+1.5] | 33 | #XKD 510 | Gerry Ashmore | | 2nd |
| 6.9.1958 | Sunbac Silverstone [Formula Libre Handicap] | | #XKD 510 | Gerry Ashmore | | 2nd |
| 7.9.1958 | USAC Lime Rock | 6 | | Marshall Teague | | 13th |
| 7.9.1958 | USAC Lime Rock | 8 | | Jack Ensley | | 11th |
| 7.9.1958 | 500 mile Road America | 97 | #XKD 536 | Skogmo / Larson | | 23rd |
| 13.9.1958 | Tourist Trophy | 4 | #XKD 504 | Gregory / Ireland | Ecurie Ecosse | 5th |
| 13.9.1958 | Tourist Trophy | 6 | #XKD 601 | Hamilton / Blond | Duncan Hamilton | 6th |
| 13.9.1958 | Tourist Trophy | 12 | #XKD 518 | Sieff / Charles | Jonathan Sieff | 9th |
| 14.9.1958 | Preliminary Bridgehampton [Handicap] | 60 | | Walt Hansgen | Briggs Cunningham | 1st |
| 14.9.1958 | Preliminary Bridgehampton [Modified] | 60 | | Walt Hansgen | Briggs Cunningham | 2nd |
| 14.9.1958 | SCCA Regional Bridgehampton [Modified] | 60 | | Walt Hansgen | Briggs Cunningham | 1st |
| 20.9.1958 | Oulton Park International [S+1.1] | 39 | | Peter Blond | Peter Blond | DNA |
| 20.9.1958 | Oulton Park International [S+1.1] | 40 | #XKD 518 | Jonathan Sieff | Jonathan Sieff | 8th |
| 20.9.1958 | Oulton Park International [S+1.1] | 44 | #XKC 403 | Reg Harris | J. C. Broadhead | DNF |
| 20.9.1958 | Oulton Park International [S+1.1] | 45 | | Peter Mould | Peter Mould | DNA |
| 21.9.1958 | GP Angola | 18 | #XKD 512 | Jimmy de Villiers | | 1st |
| 21.9.1958 | USAC Marlboro | | #XKD 560 | Jack Ensley | | 12th |
| 28.9.1958 | USAC Watkins Glen | 17 | #XKD 560 | Loyal Katskee | Jack Ensley | DNF |
| 28.9.1958 | WJC Charterhall [Racing] | 38 | #XKD 517 | Jim Clark | Border Reivers | 2nd |
| 28.9.1958 | WJC Charterhall [S+1.5] | 38 | #XKD 517 | Jim Clark | Border Reivers | 3rd |
| 28.9.1958 | WJC Charterhall [S+1.5] | 50 | | Peter Mould | P. Mould | DNA |
| 28.9.1958 | WJC Charterhall [Racing] | 50 | | Peter Mould | P. Mould | DNA |
| 28.9.1958 | ICNSCC Ellensburg [Modified] | 51 | #XKD 558 | Jim Rattenbury | | 2nd |
| 28.9.1958 | WJC Charterhall [S+1.5] | 71 | #XKD 606 | Ron Flockhart | Ecurie Ecosse | 2nd |
| 28.9.1958 | WJC Charterhall [Racing] | 71 | #XKD 606 | Ron Flockhart | Ecurie Ecosse | 1st |
| 5.10.1958 | SCCA National Vaca Valley [BM+CM+DM+EM+FM] | 100 | #XKD 531 | Ray Seher | | 6th |
| 11.10.1958 | LCCC Oulton Park [Formula Libre] | 6 | | Peter Mould | Peter Mould | DNA |
| 11.10.1958 | LCCC Oulton Park [Sports] | 6 | | Peter Mould | Peter Mould | DNA |
| 11.10.1958 | LCCC Oulton Park [Sports] | 6 | | Peter Mould | Peter Mould | DNA |
| 11.10.1958 | Preliminary Venice [CM+DM+EM+FM+BP+CP+DP] | 10 | #XKD 553 | Ed Rahal | | 1st |
| 11.10.1958 | LCCC Oulton Park [Sports] | 25 | | Peter Blond | Peter Blond | DNS |
| 11.10.1958 | LCCC Oulton Park [Formula Libre] | 25 | | Peter Blond | Peter Blond | DNA |
| 11.10.1958 | LCCC Oulton Park [Sports] | 25 | | Peter Blond | Peter Blond | DNS |
| 11.10.1958 | LCCC Oulton Park [Sports] | 69 | #XKC 403 | Reg Harris | J. C. Broadhead | DNS |
| 11.10.1958 | LCCC Oulton Park [Formula Libre] | 69 | #XKC 403 | Reg Harris | J. C. Broadhead | unused |
| 11.10.1958 | LCCC Oulton Park [Sports] | 69 | #XKC 403 | Reg Harris | J. C. Broadhead | unused |
| 11.10.1958 | SMRC Snetterton [Sports] | 80 | | Peter Mould | P. Mould | DNF |
| 12.10.1958 | 6 h Venice | 10 | #XKD 553 | Ed Rahal | | ?th |
| 12.10.1958 | USAC Riverside | 27 | #XKD 519 | Bill Krause | Frank Millard | 3rd |
| 25.10.1958 | Preliminary Minden [BM+CM+DM+EM] | | #XKD 531 | Ray Seher | | 3rd |
| 26.10.1958 | SCCA Regional Dothan [Main] | 10 | #XKD 553 | Ed Rahal | Ed Rahal | DNA |
| 26.10.1958 | Preliminary Dothan [Novice] | 77 | | Powell Thompson | C. K. Thompson | DNA |
| 26.10.1958 | SCCA Regional Dothan [Main] | 77 | | C. K. Thompson | C. K. Thompson | DNF |
| 26.10.1958 | Minden [BM+CM+DM+EM] | 100 | #XKD 531 | Ray Seher | | 4th |
| 26.10.1958 | Vineland [Main] | 149 | #XKD 545 | George Constantine | | raced |
| 2.11.1958 | Palm Springs [Exhibition] | 27 | #XKD 519 | Bill Krause | Bill Krause | DNA |
| 2.11.1958 | Palm Springs [Exhibition] | 77 | | Bill Leyen | Bill Leyen | DNA |
| 9.11.1958 | SCCA Regional Laguna Seca [BM+CM+DM] | 227 | #XKD 519 | Bill Krause | Bill Krause | DNF |
| 22.11.1958 | 6 h Pomona | | #XKD 528 | Blackwell / Miles | Carlyle Blackwell, Jr. | 1st |
| 30.11.1958 | Hammond [Main] | 17 | #XKD 560 | Bill Fuller | | raced |
| 7.12.1958 | Nassau Trophy | 50 | #XKD 541 | Robert Harrison | | DNA |
| 7.12.1958 | Nassau Trophy | | #XKD 545 | George Constantine | | DNA |