1988 · Round 13 · Practice 1 Portuguese Grand Prix
Autódromo do Estoril, Portugal
Sunday, September 25, 1988
Autódromo do Estoril, Portugal
Sunday, September 25, 1988
Fastest
SEN
1:18.537
Margin
+0.462
to PRO
Most laps
—
SEN
Laps completed
—
Best lap, gap to the fastest driver and laps completed
| Pos | Driver | Best | Gap | Laps |
|---|---|---|---|---|
| 01 | SENMcLaren · McLaren MP4-4 · Honda | 1:18.537 | — | — |
| 02 | PROMcLaren · McLaren MP4-4 · Honda | 1:18.999 | +0.462 | — |
| 03 | PATWilliams · Williams FW12 · Judd | 1:19.694 | +1.157 | — |
| 04 | MANWilliams · Williams FW12 · Judd | 1:20.325 | +1.788 | — |
| 05 | CAPMarch · March 881 · Judd | 1:20.839 | +2.302 | — |
| 06 | BERFerrari · Ferrari F1 87-88 | 1:20.854 | +2.317 | — |
| 07 | NANBenetton · Benetton B188 · Ford | 1:21.038 | +2.501 | — |
| 08 | PIQTeam Lotus · Lotus 100T · Honda | 1:21.166 | +2.629 | — |
| 09 | BOUBenetton · Benetton B188 · Ford | 1:21.178 | +2.641 | — |
| 10 | GUGMarch · March 881 · Judd | 1:21.199 | +2.662 | — |
| 11 | ALBFerrari · Ferrari F1 87-88 | 1:21.434 | +2.897 | — |
| 12 | CAFBMS Scuderia Italia · Dallara BMS-F188 ~ Dallara 3087 · Cosworth | 1:21.468 | +2.931 | — |
| 13 | WARArrows · Arrows A10 Megatron ~ Arrows A10B · Megatron | 1:21.493 | +2.956 | — |
| 14 | CHEArrows · Arrows A10 Megatron ~ Arrows A10B · Megatron | 1:21.525 | +2.988 | — |
| 15 | STRAGS · JH23 · Cosworth | 1:21.975 | +3.438 | — |
| 16 | MARMinardi · Minardi M188 · Cosworth | 1:22.198 | +3.661 | — |
| 17 | DECRial · Rial ARC01 Cosworth · Cosworth | 1:22.276 | +3.739 | — |
| 18 | PERMinardi · Minardi M188 · Cosworth | 1:22.473 | +3.936 | — |
| 19 | DALLarrousse · Larrousse LC88 · Cosworth | 1:22.535 | +3.998 | — |
| 20 | ARNLigier · Ligier JS31 · Judd | 1:22.550 | +4.013 | — |
| 21 | JOHLigier · Ligier JS31 · Judd | 1:22.749 | +4.212 | — |
| 22 | ALLLarrousse · Larrousse LC88 · Cosworth | 1:22.963 | +4.426 | — |
| 23 | PALTyrrell · Tyrrell 017 Cosworth · Cosworth | 1:23.048 | +4.511 | — |
| 24 | LAROsella · Osella FA1I ~ Osella FA1L | 1:23.051 | +4.514 | — |
| 25 | GHIZakspeed · Zakspeed 881 | 1:23.700 | +5.163 | — |
| 26 | TARColoni · Coloni FC188 (C2) · Cosworth | 1:23.807 | +5.270 | — |
| 27 | NAKTeam Lotus · Lotus 100T · Honda | 1:23.862 | +5.325 | — |
| 28 | MODEuro Brun · Ford | 1:24.076 | +5.539 | — |
| 29 | BAITyrrell · Tyrrell 017 Cosworth · Cosworth | 1:24.231 | +5.694 | — |
| 30 | LAREuro Brun · Ford | 1:25.146 | +6.609 | — |
| 31 | SCHZakspeed · Zakspeed 881 | 1:25.263 | +6.726 | — |